Relevant bibliographies by topics / Magneto- capacitance spectroscopy

Academic literature on the topic 'Magneto- capacitance spectroscopy'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Magneto- capacitance spectroscopy"

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Upadhyay, Sanjay Kumar, P. L. Paulose, Kartik K. Iyer, and E. V. Sampathkumaran. "Spin-glass behavior and pyroelectric anomalies in a new lithium-based oxide, Li3FeRuO5." Physical Chemistry Chemical Physics 18, no. 33 (2016): 23348–53. http://dx.doi.org/10.1039/c6cp04179e.

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The results of dc and ac magnetization, heat capacity, 57Fe Mössbauer spectroscopy, dielectric, pyroelectric current and isothermal magneto-capacitance measurements of a recently reported lithium-rich layered oxide, Li3FeRuO5, related to LiCoO2-type (rhombohedral, space group R3̄m), are presented.
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RADANTSEV, V. F., G. I. KULAEV, and V. V. KRUZHAEV. "KINETIC CONFINEMENT AND ZERO–ELECTRIC–FIELD BINDING IN HgCdTe ACCUMULATION LAYERS." International Journal of Modern Physics B 18, no. 27n29 (November 30, 2004): 3637–40. http://dx.doi.org/10.1142/s0217979204027189.

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The effects of kinetic confinement and forming of surface bound states at a zero external electric field (ZEF) are studied experimentally (by the magneto-capacitance spectroscopy of Landau level method) and theoretically (in 8×8 Kane model). The self-consistent calculations we performed predict the existence of occupied kinetically bound but not true bound states at a zero interface electric field that is in agreement with experimental data. The capacitance oscillations at in 2D plane magnetic fields orientation we observed are associated with oscillations of continuum electrons screening length.
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Kailuweit, P., D. Reuter, A. D. Wieck, O. Wibbelhoff, A. Lorke, U. Zeitler, and J. C. Maan. "Mapping of the hole wave functions of self-assembled InAs-quantum dots by magneto-capacitance–voltage spectroscopy." Physica E: Low-dimensional Systems and Nanostructures 32, no. 1-2 (May 2006): 159–62. http://dx.doi.org/10.1016/j.physe.2005.12.031.

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Kailuweit, Peter, Dirk Reuter, Andreas D. Wieck, Oliver Wibbelhoff, Axel Lorke, Uli Zeitler, and J. C. Maan. "Erratum to “Mapping of the hole wave functions of self-assembled InAs-quantum dots by magneto-capacitance–voltage spectroscopy”." Physica E: Low-dimensional Systems and Nanostructures 40, no. 4 (February 2008): 935–36. http://dx.doi.org/10.1016/j.physe.2007.08.074.

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Mukhopadhyay, K., M. Ghosh, P. K. Mallick, and P. K. Chakrabarti. "Enhanced electric property and magneto-capacitance co-efficient co-related with modulated Raman spectroscopy of GaFeO3 in (GaFeO3)0.50(Ni0.40Zn0.40Cu0.20Fe2O4)0.50." Materials Science and Engineering: B 189 (November 2014): 51–57. http://dx.doi.org/10.1016/j.mseb.2014.07.010.

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Bunoiu, Madalin, Eugen Mircea Anitas, Gabriel Pascu, Larisa Marina Elisabeth Chirigiu, and Ioan Bica. "Electrical and Magnetodielectric Properties of Magneto-Active Fabrics for Electromagnetic Shielding and Health Monitoring." International Journal of Molecular Sciences 21, no. 13 (July 6, 2020): 4785. http://dx.doi.org/10.3390/ijms21134785.

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An efficient, low-cost and environmental-friendly method to fabricate magneto-active fabrics (MAFs) based on cotton fibers soaked with silicone oil and iron oxide microfibers (mFe) at mass fractions 2 wt.%, 4 wt.% and 8 wt.% is presented. It is shown that mFe induce good magnetic properties in MAFs, which are subsequently used as dielectric materials for capacitor fabrication. The electrical properties of MAFs are investigated in a static magnetic field with intensities of 0 kA/m, 160 kA/m and 320 kA/m, superimposed on a medium-frequency electric field. The influence of mFe on the electrical capacitance and dielectric loss tangent is determined, and it can be observed that the electrical conductivity, dielectric relaxation times and magnetodielectric effects are sensibly influenced by the applied magnetic and electric fields. The results indicate that the MAFs have electrical properties which could be useful for protection against electromagnetic pollution or for health monitoring.
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Shauyenova, Danagul, Sol Jung, Haneul Yang, Haein Yim, and Heongkyu Ju. "Electrical and Optical Properties of Co75Si15B10 Metallic Glass Nanometric Thin Films." Materials 14, no. 1 (December 31, 2020): 162. http://dx.doi.org/10.3390/ma14010162.

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Co-based (Co75Si15B10) thin-film metallic glass (TFMG) with nanometric thicknesses (100~300 nm) was investigated for its structural, electrical, and optical properties. The TFMG structure was examined using scanning electron microscopy and X-ray diffraction, while electrical properties were examined using inductance/capacitance/resistance spectroscopy, cyclic voltammetry, and Hall effect measurements. In addition, optical absorption/reflection/transmittance measurements were performed to examine optical properties. Results revealed that Co-based TFMGs, which have an amorphous structure without surface defects, behave like a dielectric material, with higher resistivity and much lower carrier concentration than pure cobalt (Co) thin films of the same thickness, despite its mobility being modestly larger than its Co counterparts. Meanwhile, the optical investigation of TFMG enabled us to determine the complex relative permittivity (complex relative dielectric constant) ϵr˜ at a visible wavelength (632.8 nm). Moreover, unlike normal metals, TFMGs exhibited a large positive value of the real part of ϵr˜, while exhibiting properties of substantial absorption of light (absorption coefficient α). It was also found that the Co-based TFMG gained optical transparency for thicknesses less than 5 nm. TFMGs demonstrated the nearly thickness-independent properties of the electrical and optical parameters probed, a feature of high-index, dielectric-like material with negligible size effects, which may have applications in micrometer-scaled optoelectronic and magneto-optical devices.
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Balberg, I., and E. Gal. "Capacitance spectroscopy of a-Si:H." Journal of Non-Crystalline Solids 77-78 (December 1985): 323–26. http://dx.doi.org/10.1016/0022-3093(85)90666-0.

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Alim, Mohammad A., Sanjida Khanam, and Martin A. Seitz. "Immittance Spectroscopy of Smart Components and Novel Devices." Active and Passive Electronic Components 16, no. 3-4 (1994): 153–70. http://dx.doi.org/10.1155/1994/25820.

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AC small-signal immittance spectroscopy is employed as a viable tool to demonstrate electrical characterization, performance improvement, and quality assurance issues of smart materials-based components and novel devices. The variation in the ac response, complemented via dc measurements within a range of tolerating temperature, delineates competing phenomena occurring in the microstructures of these engineering material systems. The results are presented in a generic manner with possible explanations on the mechanisms for two selected Debye-like (nearly ideal) and non-Debye (non-ideal) low-capacitance resistors. This spectroscopic approach allows systematic development of a representative equivalent circuit, considered to be the characteristic of the devices and components, for specific applications.
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Zhang, Hui, Yong Wei Song, and Zhen Lun Song. "Electrodeposited Ni/Al2O3 Composite Coating on NdFeB Permanent Magnets." Key Engineering Materials 373-374 (March 2008): 232–35. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.232.

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NdFeB permanent magnets are highly susceptible to corrosion in various environments. A new composite coating electrodeposited on NdFeB magnets was investigated in this paper. The Ni matrix film was firstly electrodeposited on NdFeB surface from watts nickel electrolyte, and then Ni/Al2O3 composite coating was successively electrodeposited on the Ni film. The microstructures of electrodeposited Ni coating and Ni/Al2O3 composite coating were observed by scanning electron microscopy (SEM). The corrosion behavior of Ni coating and Ni/Al2O3 composite coating in 3.5wt% NaC1 solution was studied by polarization curves and electrochemical impedance spectroscopy (EIS). The results showed that the Ni coating and Ni/Al2O3 composite coating could both provide adequate protection to NdFeB substrate. But the free corrosion potential of Ni/Al2O3 composite coating was more positive and the passivation region was more obvious when compared with Ni coating. Meantime, the capacitance loop diameter of Ni/Al2O3 composite coating was significantly larger than that of Ni coating ,which suggested that the anticorrosion resistance of Ni/Al2O3 composite coating was better than electroplated Ni coating.
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Dissertations / Theses on the topic "Magneto- capacitance spectroscopy"

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Siddiqui, Aleem 1977. "Use of time domain capacitance spectroscopy in the study of tunneling into two-dimensional GaAs/AlGaAs heterostructures with an in-plane magnetic field." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87885.

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Kuiri, Manabendra. "Quantum capacitance and noise measurements in van der Waals heterostructures." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/5092.

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The discovery of graphene has revolutionized the field of condensed matter physics and opened new prospects for a wide range of other two-dimensional materials. Further with the advancement of fabrication techniques, one can reassemble atomically thin layers in van der Waals heterostructures, which shows exotic physics like Hofstadter’s butterfly, Valley Hall effect, Coulomb drag, Mott insulator, even denominator fractional quantum Hall effect and superconductivity. The transport properties in these systems are governed by the electronic band dispersion; therefore, it is desirable to directly probe the electronic density of states, which is beyond the conventional transport measurement. In this thesis, we have carried out the quantum capacitance measurements to probe the thermodynamic density of states of van-der Waals heterostructures based on two-dimensional materials. In the first part of my thesis, we have investigated the band structure renormalization in monolayer graphene in presence of tunable one-dimensional super-lattice potential at both zero and finite magnetic fields and supported by our theoretical calculations. Furthermore, we have employed the magneto- capacitance spectroscopy to study the energetics of bilayer graphene in presence of electric and magnetic fields. Our results directly capture the phase transition between the different ground states of zeroth Landau level in bilayer graphene. At higher electric fields, we also observe the collapsing of the Landau levels, which was consistent with the existing theoretical predictions. As a part of the thesis, we study the anisotropic band dispersion of Black phosphorus, a two-dimensional material, using the above technique and could also probe the localized states near the band edge. In the second part of the thesis, we have investigated the transport and optoelectronic properties of transition metal chalcogenides (MoTe2) of different phases (2H and 1T’). The low-frequency 1/f noise measurements in our dual gated devices allow us to extract out the noise contribution originating from both the channel as well as contacts. We show that the origin of noise in the MoTe2 channel is due to carrier number fluctuation. The transport measurement of 1T’ MoTe2 shows two transitions depending on the thickness of the flakes, where the transition at low temperature is due to MIT (metal-insulator) transition and the transition at higher temperature is attributed to a structural phase transition. Finally, we measure the photo-responsivity in MoTe2-graphene van der Waals heterostructures and show that the photo-responsivity at the junction is largely enhanced as compared to bare MoTe2. By measuring photo-voltaic response of the junction using the ionic liquid gating, we also estimate the work function of MoTe2
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Book chapters on the topic "Magneto- capacitance spectroscopy"

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Krishnan, Kannan M. "Scanning Probe Microscopy." In Principles of Materials Characterization and Metrology, 745–802. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198830252.003.0011.

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Scanning probe microscopy (SPM) scans a fine tip close to a surface and measures the tunneling current (STM) or force (SFM), based on many possible tip-surface interactions. STM provides atomic resolution imaging, or the local electronic structure (spectroscopy) as a function of bias voltage, and is also used to manipulate adsorbed atoms on a clean surface. STM operates in two modes— constant current or height—and requires a conducting specimen. SFM uses a cantilever (force sensor) to measure short range (< 1 nm) chemical, and a variety of long-range (< 100 nm) forces, depending on the tip and the specimen; a conducting specimen is not required. In static mode, the tip height is controlled to maintain a constant force, and measure surface topography. In dynamic mode, changes in the vibrational properties of the cantilever are measured using frequency, amplitude, or phase modulation as feedback to control the tip-surface distance and form the image. Dynamic imaging includes contact and non-contact modes, but intermittent contact or tapping mode is common. SPMs measure properties (optical, acoustic, conductance, electrochemical, capacitance, thermal, magnetic, etc.) using appropriate tips, and find applications in the physical and life sciences. They are also used for nanoscale lithography.
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