Relevant bibliographies by topics / Non-ferromagnetic thin film

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Non-ferromagnetic thin film'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Non-ferromagnetic thin film"

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Shlyakhtich, Maria A., and Pavel V. Prudnikov. "Non-equilibrium critical behavior of Heisenberg thin films." EPJ Web of Conferences 185 (2018): 11005. http://dx.doi.org/10.1051/epjconf/201818511005.

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In this work we study the non-equilibrium properties of Heisenberg ferromagnetic films using Monte Carlo simulations by short-time dynamic method. By exploring the short-time scaling dynamics, we have found thickness dependency of critical exponents z, θ′ and β/v for ferromagnetic thin film. For calculating the critical exponents of ferromagnetic films we considered systems with linear size L = 128 and layers number N = 2; 4; 6; 10. Starting from initial configurations, the system was updated with Metropolis algorithm at the critical temperatures
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Zelent, M., M. Mailyan, V. Vashistha, P. Gruszecki, O. Y. Gorobets, Y. I. Gorobets, and M. Krawczyk. "Spin wave collimation using a flat metasurface." Nanoscale 11, no. 19 (2019): 9743–48. http://dx.doi.org/10.1039/c8nr10484k.

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In this paper, we show that the phase shift of spin waves propagating in the plane of the film can be controlled by a metasurface formed by an ultra-narrow non-magnetic spacer separating edges of the two thin ferromagnetic films. We used this approach to demonstrate numerically the metalens for spin waves.
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Murayama, Y., and K. Koike. "Non-RKKY mechanism of polarization in Au thin film deposited onto ferromagnetic Fe." Journal of Magnetism and Magnetic Materials 140-144 (February 1995): 659–60. http://dx.doi.org/10.1016/0304-8853(94)01038-2.

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Lee, Sang A., Jong Mok Ok, Jegon Lee, Jae‐Yeol Hwang, Sangmoon Yoon, Se‐Jeong Park, Sehwan Song, et al. "Epitaxial Stabilization of Metastable 3C BaRuO 3 Thin Film with Ferromagnetic Non‐Fermi Liquid Phase." Advanced Electronic Materials 7, no. 4 (March 12, 2021): 2001111. http://dx.doi.org/10.1002/aelm.202001111.

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Muratov, Cyrill B., and Xiaodong Yan. "Uniqueness of one-dimensional Néel wall profiles." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, no. 2187 (March 2016): 20150762. http://dx.doi.org/10.1098/rspa.2015.0762.

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We study the domain wall structure in thin uniaxial ferromagnetic films in the presence of an in-plane applied external field in the direction normal to the easy axis. Using the reduced one-dimensional thin-film micromagnetic model, we analyse the critical points of the obtained non-local variational problem. We prove that the minimizer of the one-dimensional energy functional in the form of the Néel wall is the unique (up to translations) critical point of the energy among all monotone profiles with the same limiting behaviour at infinity. Thus, we establish uniqueness of the one-dimensional monotone Néel wall profile in the considered setting. We also obtain some uniform estimates for general one-dimensional domain wall profiles.
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Swindells, C., and D. Atkinson. "Interface enhanced precessional damping in spintronic multilayers: A perspective." Journal of Applied Physics 131, no. 17 (May 7, 2022): 170902. http://dx.doi.org/10.1063/5.0080267.

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In the past two decades, there have been huge developments in the understanding of damping in multilayered thin films and, more generally, in spin-transport in spintronic systems. In multilayered ferromagnetic (FM)/non-magnetic (NM) thin-film systems, observations of ferromagnetic resonant precession show a strong increase in the fundamental damping when the FM thin films are layered with heavy metals, such as Pt. These observations led to significant theoretical developments, dominated by the “spin-pumping” formalism, which describes the enhancement of damping in terms of the propagation or “pumping” of spin-current across the interface from the precessing magnetization into the heavy metal. This paper presents a perspective that introduces the key early experimental damping results in FM/NM systems and outlines the theoretical models developed to explain the enhanced damping observed in these systems. This is followed by a wider discussion of a range of experimental results in the context of the theoretical models, highlighting agreement between the theory and experiment, and more recent observations that have required further theoretical consideration, in particular, with respect to the role of the interfaces and proximity-induced magnetism in the heavy metal layer. The Perspective concludes with an outline discussion of spin-pumping in the broader context of spin-transport.
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Huang, Angus, Sheng-Hsiung Hung, and Horng-Tay Jeng. "Strain Induced Metal–Insulator Transition of Magnetic SrRuO3 Single Layer in SrRuO3/SrTiO3 Superlattice." Applied Sciences 8, no. 11 (November 3, 2018): 2151. http://dx.doi.org/10.3390/app8112151.

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Ferromagnetic phase in a two-dimensional system plays an important role not only in applications but also in studies of phase transition theory. Among numerous ferromagnetic materials, Sr Ru O 3 is famous for its half-metallicity, itinerant ferromagnetism and non-Fermi liquid metalicity. Single layer Sr Ru O 3 in Sr Ru O 3 / Sr Ti O 3 (SRO/STO) superlattice has been predicted as a two-dimensional half-metallic ferromagnetic system based on density functional theory (DFT). However, experiments show that metal–insulator transition associated with ferro–antiferromagnetism (FM–AFM) transition occurs when the thickness of SRO is less than 4 u.c. Combining DFT calculations with Monte Carlo simulations, we demonstrate in this work that the bulk ferromagnetic metallicity can be realized in single layer SRO in SRO/STO superlattice by manipulating the strain effect to trigger the metal–insulator transition, achieving two-dimensional (2D) half-metallic SRO thin film beyond the experimental observation of AFM insulator.Our results pave a new route to fulfill the ultrathin spin-polarized-2D electron gas (SP-2DEG).
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Mohanty, P., V. Ganeshan, and Chandana Rath. "Room Temperature Ferromagnetism in Ti0.985Co0.015O2-δ Thin Films Grown by Pulsed Laser Deposition Technique." Materials Science Forum 760 (July 2013): 1–7. http://dx.doi.org/10.4028/www.scientific.net/msf.760.1.

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Ti0.985Co0.015O2-δ thin films are deposited at 0, 0.1, 1 and 300 mTorr oxygen partial pressures by pulsed laser deposition (PLD) technique. Glancing angle x- ray diffraction (GAXRD) and micro-Raman spectroscopy show that the phase changes from rutile to anatase with increasing oxygen partial pressure. From Rutherford backscattering spectroscopic (RBS) technique, O to (Ti+Co) atomic ratio is found to increase with increasing oxygen partial pressure. Further, the simulation of RBS data while reveals non-uniform distribution of Co throughout the film deposited at 0 and 0.1 mTorr oxygen partial pressures, at 1 and 300 mTorr oxygen partial pressure, Co distribution is found to be uniform. Magnetic measurements confirm the room temperature ferromagnetism (RTFM) in all the films independent of the phase. Magnetic force microscopy (MFM) further supports the ferromagnetic nature of the films. We attribute the ferromagnetism in the films to be arisen from defects like oxygen vacancies rather than any contamination or Co clustering.
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Grimes, M., N. Gurung, H. Ueda, D. G. Porter, B. Pedrini, L. J. Heyderman, T. Thomson, and V. Scagnoli. "X-ray investigation of long-range antiferromagnetic ordering in FeRh." AIP Advances 12, no. 3 (March 1, 2022): 035048. http://dx.doi.org/10.1063/9.0000320.

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We demonstrate a probe of long-range antiferromagnetic (AF) order in FeRh thin films using non-resonant magnetic x-ray scattering. In particular, x-rays at energies below the Fe K-edge have been used for the observation of magnetic Bragg peaks. Due to the low efficiency of the magnetic scattering, a grazing incidence geometry was used to optimise the diffracted intensity from the thin film samples. Based on Scherrer analysis, we estimate a coherence length similar to previous reports from x-ray magnetic linear dichroism (XMLD) experiments, indicating that domain sizes are limited to 40 nm which is consistent with the grain size. The temperature dependent behaviour of the AF order shows an inverse correlation with the emergence of the ferromagnetic (FM) moment, as expected from the phase diagram.
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PADHAN, PRAHALLAD, and R. C. BUDHANI. "PERPENDICULAR-TO-PLANE MAGNETORESISTANCE IN La0.7Ca0.3MnO3/LaNiO3 SUPERLATTICES: THE EFFECTS OF INTERFACIAL DISORDER AND SPIN DIFFUSION ON CHARGE TRANSPORT." Modern Physics Letters B 17, no. 29n30 (December 30, 2003): 1517–26. http://dx.doi.org/10.1142/s021798490300658x.

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Current perpendicular-to-plane (CPP) magnetoresistance (MR) of La 0.7 Ca 0.3 MnO 3/ LaNiO 3 superlattices sandwiched between two YBa 2 Cu 3 O 7 thin film electrodes is reported. The CPP-MR in the temperature window of 20 K to 80 K is larger by a factor of 7~15 compared to current-in-plane (CIP) MR. Both CPP and CIP-magnetoresistance decrease with temperature below ~ 20 K. The MR at T<40 K is also strongly hysteretic and does not saturate even at 4 Tesla. Measurements of saturation moment and modeling of the perpendicular-to-plane resistance suggest disorder at the ferromagnetic non-magnetic layer interfaces which dominate the MR. The relative orientation of magnetization in the ferromagnetic layers seems to play only a subservient role in the creation of magnetoresistance.
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Dissertations / Theses on the topic "Non-ferromagnetic thin film"

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Светличный, Виталий Анатольевич. "Резонансная вихретоковая дефектоскопия тонких неферомагнитных пленок." Thesis, Харьковский национальный университет радиоэлектроники, 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17672.

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Диссертация на соискание научной степени кандидата технических наук по специальности 05.11.13 - приборы и методы контроля и определения состава веществ. – Харьковский национальный университет радиоэлектроники, Харьков, 2015 г. Диссертация посвящена разработке метода и прибора для эффективного контроля дефектов структуры тонких неферромагнитных пленок. Рассмотрены общие положения применения вихретоковых преобразователей в дефектоскопии. Показаны характерные общие принципы построения вихретоковых дефектоскопов. Указаны направления улучшения метрологических показателей вихретоковых дефектоскопов тонких пленок. Выполнен анализ дефектов структуры тонких неферромагнитных пленок и методов контроля качества. Проведен анализ характеристик апериодических ВТП, способных выявлять указанные дефекты. Уточнена теория апериодических ВТП с учетом анализа влияния на характеристики преобразования внутреннего сопротивления источников питания и параметров нагрузки. Выполнен анализ характеристик вихретоковых резонансных ВТП предназначенных для выявления дефектов тонких неферромагнитных пленок. Рассмотрены различные режимы работы ВТП с учетом внутреннего сопротивления источника питания и сопротивления нагрузки, способы подключения ВТП к источнику и т.д. Выполнен анализ характеристик, даны сравнительная оценка и рекомендации, обосновавшие схемные решения и параметры ВТП. Доказаны преимущества резонансных ВТП относительно апериодических. Проведен анализ факторов, влияющих на точность выявления дефектов тонких неферромагнитных пленок средствами высокочастотной резонансной вихретоковой дефектоскопии. Показано, что одним из основных факторов, влияющих на точность измерений в резонансной вихретоковой дефектоскопии, является нестабильность рабочего зазора ВТП. Предложен вариант компенсации влияния изменения рабочего зазора при использовании резонансного ВТП накладного типа, работающего на двух различных частотах. Разработан способ резонансной дефектоскопии, позволяющий улучшить выявление дефектов в тонких неферромагнитных пленках. Исследована модель оценки взаимодействия резонансного ВТП с неферромагнитной тонкой пленкой. Приведены аналитические соотношения, проведены расчеты зависимости выходного сигнала от параметров ВТП. Для практического подтверждения аналитических положений работы выполнены экспериментальные исследования: влияние отдельных параметров резонансного ВТП на его основную характеристику преобразования; выбор рабочей частоты; поиск наиболее целесообразного способа создания компенсационного напряжения; уточнение особенностей работы трансформаторных ВТП на цилиндрических и плоских катушках; выбор типа ВТП и схемы его включения. Создан дефектоскоп, позволяющий выявлять дефекты структуры тонких неферромагнитных пленок.
Dissertation for the degree of Ph. D. in Engineering Science, specialty 05.11.13 – devices and methods of control and determination of the composition of substances. – Kharkov National University of Radio Electronics, Kharkov, 2015. The dissertation is devoted to the development of methods and instruments for the effective control of defects imperfections film structure The analysis of the characteristics of various ECP capable of detecting these defects. Considering the various modes of operation, taking into account the internal resistance of the power supply and the load resistance, how to connect to a power source ECP. Developed a way to improve the detection of defects in non–ferromagnetic thin films. A model to assess the interaction with non–ferromagnetic resonance ECP thin film. These analytical ratios were calculated according to the output signal from the parameters of the ECP. For experimental research laboratory prototype was manufactured eddy–current flaw detector by which to check whether the calculation of the theoretical and experimental relations.
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Світличний, Віталій Анатолійович. "Резонансна вихрострумова дефектоскопія тонких неферомагнітних плівок." Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17663.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.11.13 - прилади і методи контролю та визначення складу речовин. – Харківський національний університет радіоелектроніки, Харків, 2015 р. Дисертація присвячена розробці методу і приладу для ефективного контролю дефектів структури тонких неферомагнітних плівок. Проведено аналіз характеристик різних ВСП, здатних виявляти зазначені дефекти. Розглянуті різні режими роботи з урахуванням внутрішнього опору джерела живлення і опору навантаження, способи підключення ВСП до джерела живлення. Розроблено спосіб, що дозволяє поліпшити виявлення дефектів у тонких неферомагнітних плівках. Досліджено модель оцінки взаємодії резонансного ВСП з неферомагнітною тонкою плівкою. Наведено аналітичні співвідношення, проведено розрахунки залежності вихідного сигналу від параметрів ВСП. Для експериментальних досліджень був виготовлений лабораторний макет вихрострумового дефектоскопа, за допомогою якого здійснювалася перевірка відповідності розрахункових теоретичних співвідношень з експериментальними.
Dissertation for the degree of Ph. D. in Engineering Science, specialty 05.11.13 – devices and methods of control and determination of the composition of substances. – Kharkov National University of Radio Electronics, Kharkov, 2015. The dissertation is devoted to the development of methods and instruments for the effective control of defects imperfections film structure The analysis of the characteristics of various ECP capable of detecting these defects. Considering the various modes of operation, taking into account the internal resistance of the power supply and the load resistance, how to connect to a power source ECP. Developed a way to improve the detection of defects in non–ferromagnetic thin films. A model to assess the interaction with non–ferromagnetic resonance ECP thin film. These analytical ratios were calculated according to the output signal from the parameters of the ECP. For experimental research laboratory prototype was manufactured eddy–current flaw detector by which to check whether the calculation of the theoretical and experimental relations.
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Schneider, Michael [Verfasser], Stefan [Akademischer Betreuer] Eisebitt, Stefan [Gutachter] Eisebitt, and Olav [Gutachter] Hellwig. "Non-linear x-ray diffraction from ferromagnetic thin-films / Michael Schneider ; Gutachter: Stefan Eisebitt, Olav Hellwig ; Betreuer: Stefan Eisebitt." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1187333387/34.

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Peng, Tao. "Conception et réalisation de micro-capteurs à magnéto-impédance pour le contrôle non destructif." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112407/document.

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La capacité à détecter des micro-défauts ou des défauts profonds dans les pièces métalliques constitue un enjeu important pour l'industrie de l'aéronautique ou du nucléaire. La technique de contrôle non destructif (CND) par courant de Foucault est souvent utilisée pour cette application. Cette thèse s’inscrit dans le cadre d'une collaboration ayant pour but la réalisation et l'intégration de micro-capteurs de champ magnétique basés sur l’effet de magnéto-impédance (MI) à des systèmes de détection par CND. Ces micro-capteurs de structure multicouche (ferromagnétique/conducteur/ferromagnétique) ont été élaborés en salle blanche par dépôt de films minces. Un traitement thermique sous champ magnétique a ensuite permis d’optimiser les propriétés du matériau et d’induire des anisotropies dans le plan des couches ferromagnétiques. Une méthode basée sur la double démodulation d’amplitude du signal de mesure a été proposée pour la caractérisation dynamique des capteurs. Les paramètres importants tel que la géométrie, l’anisotropie et la fréquence d’excitation ont été étudiés afin d’optimiser les caractéristiques. Les résultats ont montré la nécessité de polariser les capteurs en champ. Nous avons donc étudié la possibilité de réaliser, grâce à une technique de micromoulage épais, un microsolénoïde 3D et des travaux préliminaires sur l’intégration d'un capteur dans le microsolénoïde par transfert de film ont été effectués. Enfin, une étude théorique a été réalisée en tenant compte des résultats obtenus expérimentalement. Pour cela, le modèle de Landau-Lifshitz-Gilbert (LLG) a été implanté dans un code de calcul électromagnétique par éléments finis permettant de calculer l’impédance du capteur en fonction du champ magnétique appliqué
The capability to detect micro-defects or buried flaws in the metallic parts is an important issue for the aerospace or nuclear industry. The technique of nondestructive testing (NDT) by eddy current is widely used for these applications. This thesis is part of collaboration project aimed at the realization and integration of magnetic field microsensors based on the magneto-impedance (MI) effect for the NDT detection systems. These multilayered structure microsensors (ferromagnetic/conductor/ferromagnetic) were realized in the clean room by thin film deposition method. A post-annealing step with magnetic field was then used to optimize the material properties and to induce magnetic anisotropy in the ferromagnetic layers. A method based on the double amplitude demodulation was proposed for the dynamic characterization of the sensors. The important parameters such as the geometry, the anisotropy and the driven frequency were studied in order to optimize the characteristics. The results showed that a bias field is necessary for the application. Therefore, we have investigated the possibility to realize, through thick micromoulding technique, a 3D microsolenoid and preliminary work on integrating a sensor in the microsolenoid by film transfer has been carried out. Finally, a theoretical study was investigated by taking into account the results obtained experimentally. For this purpose, the model of Landau-Lifshitz-Gilbert (LLG) has been implemented in an electromagnetic finite element calculation program in order to determine the impedance of the sensor as a function of the applied magnetic field
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Book chapters on the topic "Non-ferromagnetic thin film"

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Barman, Anjan, and Jaivardhan Sinha. "Tunable Magnetic Damping in Ferromagnetic/Non-magnetic Bilayer Films." In Spin Dynamics and Damping in Ferromagnetic Thin Films and Nanostructures, 127–52. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66296-1_7.

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"Radiology." In Oxford Handbook for Medical School, edited by Kapil Sugand, Miriam Berry, Imran Yusuf, Aisha Janjua, Chris Bird, David Metcalfe, Harveer Dev, et al., 811–20. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780199681907.003.0044.

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This chapter discusses the main imaging modalities used to aid diagnosis and treatment in patients. It explains the physics behind the plain X-ray and the six main densities seen on plain films. Indications for plain films, for example, chest and abdominal films, trauma, and orthopaedics, are discussed, including limitations such as 2D representation of 3D structures and radiation dose. Through the use of sound waves and echoes, ultrasound can be used for a wide variety of imaging, including abdominal and pelvic organs, vascular structures, and even the neonatal brain via the baby’s open fontanelle. The chapter also covers the detailed imaging and 3D modelling obtained from computed tomography (CT) and magnetic resonance imaging scans, including their drawbacks (high radiation dose from CT scans, contrast can induce nephropathy in renal impairment, while MRI scans are time-consuming and cannot be used in patients with ferromagnetic implants). Indications for fluoroscopy (dynamic studies, e.g. barium contrast to delineate gastrointestinal tract pathology) and nuclear imaging are also covered. A wide range of vascular and non-vascular interventional radiology techniques are also outlined.
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Conference papers on the topic "Non-ferromagnetic thin film"

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Гришин, S. Grishin, Садовников, A. Sadovnikov, Романенко, and D. Romanenko. "Anisotropy of magnetostatic wave group velocities in ferromagnetic waveguides." In XXIV International Conference. Москва: Infra-m, 2016. http://dx.doi.org/10.12737/22893.

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The results of theoretical and experimental study of anisotropic propagation of magnetostatic waves (MSW) in ferromagnetic thin-film microsize waveguides are presented. Electrodynamic model of tangentially magnetized ferromagnetic waveguide is developed. On the base of the model, the main features in rotation of group velocity vector of volume MSW (VMSW) by rotating a wave vector and a vector of an external bias magnetic field relative to the axis of symmetry of the waveguide are demonstrated. It is shown, that a decrease in a width of the waveguide to the micron size leads to non-reciprocal propagation of VMSW and to increase of angular divergence between the phase and group velocities of VMSW. The experimental research of T-shaped ferromagnetic microwaveguide demonstrates the difference in power levels of a signal that is branched in the shoulders of T-shaped waveguide when the bias magnetic field is rotated in the waveguide plane.
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