Relevant bibliographies by topics / Spin-canting angle

Academic literature on the topic 'Spin-canting angle'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Spin-canting angle"

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Pebler, J., C. Frommen, and M. Mangold. "Magnetic Susceptibility Calculated from Correlation-Lengths Derived by Mössbauer Relaxation Spectra." Zeitschrift für Naturforschung A 54, no. 5 (May 1, 1999): 317–28. http://dx.doi.org/10.1515/zna-1999-0508.

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From the knowledge of the spin correlation functions derived from Mössbauer relaxation spectra of quasi-one-dimensional A2Mn0.98Fe()()2F5(H2O) we could fit the antiferromagnetic susceptibilities of A2MnF5(H2O) with A = Na+, (NH4)+, K+, Rb+ obtained for single crystal samples. The calculation yielded characteristic parameters such as the local anisotropy D, the intra-chain exchange energy J, the inter-chain exchange energy |Jʹ|, the Neel temperature TN, and the spin canting angle φ.
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Cadogan, J. M., Pierric Lemoine, Brianna R. Slater, Arthur Mar, and Maxim Avdeev. "Neutron Diffraction Study of the Hexagonal Perovskite-Type Compound LaCrGe3." Solid State Phenomena 194 (November 2012): 71–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.194.71.

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The BaNiO3-type structure and the ferromagnetic order (TC = 78 K) of the Cr sublattice in LaCrGe3 have been confirmed by neutron powder diffraction measurements. At 20 K, the magnetic structure is collinear along the c axis with a Cr magnetic moment of 1.24(4) μB. Below 3 K, LaCrGe3 has a spin-canted ferromagnetic structure with a canting angle θ of 32(6) and a Cr magnetic moment of 1.31(4) μB at 1.7 K.
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Jaoqueline E. M. Allan, J. M. D. Coey, I. S. Sanders, U. Schwertmann, G. Friedrich, and A. Wiechowski. "An occurrence of a fully-oxidized natural titanomaghemite in basalt." Mineralogical Magazine 53, no. 371 (June 1989): 299–304. http://dx.doi.org/10.1180/minmag.1989.053.371.04.

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AbstractTitanomaghemite occurs in a relatively fresh doleritic intrusion in an area of Precambrian gneiss in Minas Gerais, Brazil. It hosts exsolution lamellae of ilmenite and contains more than 90% of the iron in the ferric form. It is more resistant to weathering than the ilmenite and is inherited virtually unaltered by the resulting soils. Titanomaghemite, extracted as grains from a weathered rind of the rock, has lattice parameter a0 = 0.8348(3) nm and has a canted spin structure due to substitution of non-magnetic ions on tetrahedral and octahedral sites of the spinel structure. The average canting angle is 32 ± 3° and canting occurs predominantly on the octahedral iron sublattice. Its formula, based on microprobe analysis and Mössbauer spectroscopy may be expressed as:where [] and {} denote ions on tetrahedral and octahedral sites, respectively. The spontaneous magnetization of the mineral is 36(3) J/T/kg.
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Brown, R. H., D. M. C. Nicholson, W. H. Butler, X. G. Zhang, W. A. Shelton, T. C. Schulthess, and J. M. MacLaren. "Calculation of the canting angle dependence of the resistivity in Cu|Co spin valves." Journal of Applied Physics 81, no. 8 (April 15, 1997): 4008–10. http://dx.doi.org/10.1063/1.364922.

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Liu, Ting, Su-Mei Gao, Long-Yang Xu, Jiong-Peng Zhao, Fu-Chen Liu, Hai-Liang Hu, and Zhen-Hui Kang. "Design and Synthesis of Stable Cobalt-Based Weak Ferromagnetic Framework with Large Spin Canting Angle." Inorganic Chemistry 53, no. 24 (December 2, 2014): 13042–48. http://dx.doi.org/10.1021/ic502177k.

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Ibarra, R., E. Lesne, B. Ouladdiaf, K. Beauvois, A. S. Sukhanov, R. Wawrzyńczak, W. Schnelle, et al. "Noncollinear magnetic order in epitaxial thin films of the centrosymmetric MnPtGa hard magnet." Applied Physics Letters 120, no. 17 (April 25, 2022): 172403. http://dx.doi.org/10.1063/5.0090009.

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Magnetic systems exhibiting spin-canted states have garnered much attention recently for their promising rich exotic properties driven by the real-space spin textures and competing magnetic orders. In this study, we present the structural and magnetic properties of hexagonal 60 nm MnPtGa epitaxial thin films grown by magnetron sputtering on Al2O3(0001) single-crystalline substrates. The MnPtGa film crystallizes in the centrosymmetric P63/ mmc (No. 194) space group, showing perpendicular magnetic anisotropy along the c-axis, with a Curie temperature TC = 263 K. In addition, the MnPtGa film undergoes a spin reorientation transition at Tsr = 160 K. We investigated the MnPtGa magnetic ground states using single-crystal neutron diffraction. A structurally forbidden (001) magnetic Bragg reflection emerges below Tsr, indicating the existence of a spin-canted state, where the magnetic moments align ferromagnetically perpendicular to the basal plane, and a non-zero in-plane component exhibits an antiferromagnetic ordering along the c-axis. At 2 K, the refined magnetic moments of Mn are μz = 4.2(4) μB and μx = 1.5(3) μB, projected onto the c-axis and basal plane, respectively. Hence, we determined a 20° Mn spin canting angle off from the c-axis.
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Pietzsch, Oswald, and Roland Wiesendanger. "Non-collinear magnetic order in nanostructures investigated by spin-polarized scanning tunneling microscopy." Pure and Applied Chemistry 83, no. 11 (July 10, 2011): 1981–88. http://dx.doi.org/10.1351/pac-con-11-02-09.

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The successful conjunction of the ultimate spatial resolution capability of the scanning tunneling microscope (STM) with the sensitivity to the spin of the tunneling electrons has opened the door to investigations of magnetism at the nanoscale where the fundamental interactions responsible for magnetic order can be studied. Spin-polarized (SP) STM allows insight into a fascinating world with surprisingly rich magnetic phenomena. Ferromagnetic structures with magnetic domains are found at nanometer length scales, or 2D antiferromagnetically ordered monolayers (MLs) where the magnetization is reversed from one atom to the next. Such collinearly ordered states may be modified by the Dzyaloshinsky–Moriya (DM) interaction which can induce a small canting angle between neighboring atomic moments, thus giving rise to novel non-collinear spin spiral ground states. DM interaction is a result of electron scattering in a crystal environment with broken inversion symmetry. Spin spirals were observed in a variety of systems, like ultrathin Fe films, or MLs of Mn atoms on the (110) and (001) faces of a W crystal. Using a magnetically sensitive probe tip, individual Co atoms were assembled to form chains on top of a spin spiral. The magnetization orientation of each individual atom can be manipulated by repositioning it along the spin spiral.
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Rajesh, R. "Electron density distribution influencing the electrical and magnetic properties of polycrystalline Bi0.9Sm0.1FeO3 ceramics." International Journal of Materials Research 113, no. 4 (March 1, 2022): 278–86. http://dx.doi.org/10.1515/ijmr-2021-8339.

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Abstract This article reports the structural properties that influence the electrical and magnetic behaviours of polycrystalline Bi1−x Sm x FeO3 (x = 0, 0.1) ceramics. The samples are synthesized by a two-step solid state reaction. X-ray diffraction patterns expose two characteristic peaks corresponding to (104) and (110) planes around 31°. Bi1−x Sm x FeO3 (x = 0, 0.1) samples crystalize primarily in the R3c phase along with the traces of secondary phases. The Rietveld refinement analysis reveals that the tilt angle of Bi0.9Sm0.1FeO3 reduces due to the twisting of FeO6 octahedra compared to pristine BiFeO3. The electron density distribution and type of bonding are analyzed using the maximum entropy method. The microstructural analysis reveals that the Bi0.9Sm0.1FeO3 sample has a reduced average particle size compared to pristine BiFeO3. The influence of samarium ions in the bismuth site deviates the canting angle of the modulated spiral spin arrangement and the charge density distribution of the Bi0.9Sm0.1FeO3 sample as a result, the electrical and magnetic behaviours are improved compared with bare BiFeO3.
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Hossain, SM Al Imran, MK Roly, and TM Imran Imran. "Crystal Structure Refinement, Magnetic and Mössbauer Analysis of LaFeO3 Perovskite Synthesized by SOL-GEL method." Bangladesh Journal of Physics 27, no. 2 (March 10, 2022): 27–37. http://dx.doi.org/10.3329/bjphy.v27i2.57664.

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In this present study, LaFeO3 nanoparticles have been successfully synthesized by sol-gel method and annealed the produced sample at 600 °C, 800 °C, 1000 °C, 1200 °C. The influence of annealing temperature on the structural, morphological and magnetic properties of the developed nanoparticles has been investigated systematically. The XRD patterns confirmed the absence of impurity or secondary phase in the spectra. Orthorhombic crystal system of pbnm space group was successfully determined by Rietveld refinement. Scherrer method was used to calculate crystallite size. An increasing trend in crystallite size and improving crystallinity were obtained with increasing annealing temperature. Scanning Electron Microscopy (SEM) images showed a homogeneous distribution of increasing average particle sizes ranging from 35 nm to 450 nm. Magnetic hysteresis (M-H) loop was recorded at room temperature revealed weak ferromagnetism in nanocrystalline lanthanum ferrite. The maximum magnetization was found to be 1.82 emu/g at 600 °C, and it was sharply decreased to 0.33 emu/g at 1200 °C annealing temperature. Interactions between the antiferromagnetic and ferromagnetic exchange coupling are influenced by the uncompensated spin canting causes to accomplish the ordering of weak ferromagnetism in LaFeO3. Moreover, the bond length of Fe-O and the bond angle of Fe-O-Fe were decreased with decreasing annealing temperature. As a result, Fe ions, come closer to each other, enhancing the ferromagnetic exchange interaction between iron ions via oxygen ions made significant contributions to the magnetic properties of LaFeO3 nanoparticles. Mössbauer spectroscopy was used to find the nature of interactions for the observed magnetic behavior depending on different site environments with varying annealing temperatures. Bangladesh Journal of Physics, 27(2), 27-37, December 2020
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Zeng, Ming-Hua, Wei-Xiong Zhang, Xian-Zhong Sun, and Xiao-Ming Chen. "Spin Canting and Metamagnetism in a 3D Homometallic Molecular Material Constructed by Interpenetration of Two Kinds of Cobalt(II)-Coordination-Polymer Sheets." Angewandte Chemie 117, no. 20 (May 13, 2005): 3139–42. http://dx.doi.org/10.1002/ange.200462463.

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Dissertations / Theses on the topic "Spin-canting angle"

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GALIZIA, PIETRO. "Production and morphological and microstructural characterization of bulk composites or thick films for the study of multiphysics interactions." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2674672.

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The surge of interest in multifunctional materials over the past 15 years has been driven by their fascinating physical properties and huge potential for technological applications such as sensors, microwave devices, energy harvesting, photovoltaic technologies, solid-state refrigeration, and data storage recording technologies. Among the others, magnetoelectric multiferroic composites are a special class of advanced solid-state compounds with coupled ferromagnetic and ferroelectric ferroic orders which allow to perform more than one task by combining electronic, magnetic and mechanical properties into a single device component. The production and characterization of lead zirconate titanate (PZT)- cobalt ferrite composites was the main topic of the thesis. During the PhD activity different ceramic processing and characterization technologies were studied and involved in order to optimize the produced materials as a function of the final microstructural and functional properties. The synthesis of cobalt ferrite (CF) and niobium-doped lead zirconate titanate (PZTN) powders by solid state reaction method and sol-gel technique, to control the particle size distributions and their microstructural and functional properties through calcination and milling treatments has been addressed first, followed by the mixing of the PZT and CF powders to produce particulate composites. The dispersion of PZT and CF in a liquid media, to produce layered composites by depositing the particles by electrophoretic deposition was an objective of the work as well. Key issues such as the lead loss during the sintering of PZTN-CF composites and the reaction between CF and titania have been addressed and have resulted in improvements in the sintering and characterization techniques leading to the production of fully dense PZTN-CF dual-particulate composites. In particular, the optimized sintering parameters have configured a new paradigm of ceramic sintering, which has been called quite-fast sintering, in respect to the traditional one, and the study of the PbO loss has led to propose an equation to calculate the PbO loss through XRD analysis. Further important achieved results were: the production of nanocobalt ferrite particles by multi-step milling, the correlation between the spin-canting angle with the microstrain and the average crystallite size of nanocobalt ferrite particles, the understanding of the CF growth mechanisms, the extension of the Globus model from small ferromagnetic grains “having no defect inside” to multiparallel-twinned overgrown ones, the understanding of heating rate effect on the interface nucleation onset of the anatase-to-rutile transformation and the anatase particle size, and the reaction products between CF and rutile at 1200 °C at the variation of CF/rutile ratio.
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