Article
Physics, Applied
Yuto Shoka, Genki Okano, Hiroyuki Suto, Satoshi Sumi, Hiroyuki Awano, Kenji Tanabe
Summary: We have discovered a new phenomenon called the anisotropic magneto-inductance (AML) effect, where inductance oscillates in permalloy films as a function of the angle between an in-plane magnetic field and an electric current direction. We have investigated the dependence of the AML effect on size and voltage, and found that it should be evaluated in terms of inductivity based on length, frequency, and amplitude dependences. Inductors utilizing this AML effect have potential to be variable, on-chip, and significantly smaller than small commercial inductors.
APPLIED PHYSICS EXPRESS
(2023)
Article
Physics, Applied
Chandan Kumar Vishwakarma, B. K. Mani
Summary: In this study, rare-earth (Nd and Er)-substituted NBT materials were designed using first-principles calculations. The calculations showed the emergence of magnetic degrees of freedom in these materials. The magnetic moments obtained for Nd-NBT and Er-NBT were found to be 1.47 and 1.49 mu(B)/f/u:, respectively, at the maximum concentration of 25%. The presence of unpaired f-electrons in the systems was traced as the mechanism for the nonzero magnetic moments in (Nd/Er)-NBT. Simulation on magnetooptic effects demonstrated a significant Kerr signal of 0.7 degrees in both materials, suggesting their potential for magneto-optical applications.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Kai Zhang, Yuelei Zhao, Zhiqin Chu, Yan Zhou
Summary: The paper introduces a revolutionary event camera sensor as an add-on to traditional MOKE microscopy and explores the potential applications of event-based vision in this field. The use of frame stacking method improves the visibility of generated slow motion videos to human eyes, and a proof-of-principle feedback control experiment is performed using event-based vision data.
Article
Optics
Antonio Perez-Garrido, Peng Guo, Vladimir Gasparian, Esther Jodar
Summary: We discuss the anomalous behavior of Faraday and Kerr rotation angles in finite periodic PT-symmetric structures. It is shown that a phase transition-like anomalous behavior can occur, where one of the rotation angles becomes negative and both angles have spectral singularities. We also find a relationship between the real and imaginary parts of the Kerr and Faraday rotation angles.
Article
Nanoscience & Nanotechnology
Joerg Schoepf, Paul H. M. van Loosdrecht, Ionela Lindfors-Vrejoiu
Summary: The magneto-optic Kerr effect can be used to probe magnetization reversal in ferromagnetic thin films and as an alternative to magnetometry. The wavelength-dependent Kerr effect can lead to a reversal in Kerr rotation and disappear at specific wavelengths. Through investigating epitaxial heterostructures, researchers discovered humplike features in the Kerr rotation hysteresis loops of trilayers consisting of ferromagnetic manganite layers separated by a nickelate layer when measured with 400 nm wavelength light. They attribute these features to the opposite Kerr rotation sense of the different ferromagnetic layers and the additive behavior of the Kerr signal. The change in Kerr rotation sign for the thinner manganite layer is most likely caused by optical interference.
Article
Nanoscience & Nanotechnology
Dimuthu Obeysekera, Kasun Gamage, Yunpeng Gao, Sang-wook Cheong, Junjie Yang
Summary: Cr1/3TaS2, as a candidate for chiral magnet, exhibits a unique CHM-FFM transition in its single crystals, with higher transition temperature and transition field compared to Cr1/3NbS2, likely due to its strong spin-orbit coupling. This material could serve as an intriguing platform for engineering chiral magnetic solitons with tunable SOC.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Wentong Yi, Yiwen Zhu, De Hou, Guoqiang Ning, Zhigao Sheng, Zhongzhou Du, Wenzhong Liu
Summary: Thermometry is crucial in laboratory and industry settings. We propose a noninvasive temperature measurement method based on the superparamagnetic properties of nickel-plated films. This method combines magnetic and optical physical quantities to increase the penetration and amount of information in temperature measurement.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Ratnadwip Singha, Fang Yuan, Scott B. Lee, Graciela V. Villalpando, Guangming Cheng, Birender Singh, Suchismita Sarker, Nan Yao, Kenneth S. Burch, Leslie M. Schoop
Summary: Advancements in low-dimensional functional device technology heavily rely on the discovery of suitable materials. NdSb2 has interesting physical properties and can be exfoliated down to few layers, making it an ideal material for such advancements.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Brinda Kuthanazhi, Na Hyun Jo, Li Xiang, Sergey L. Bud'ko, Paul C. Canfield
Summary: By synthesizing CeBi single crystals and systematically studying their magnetic and transport properties, we obtained the field-temperature phase diagram for CeBi, identifying regions with specific magnetization values and a new phase region. In the low-temperature regime, the magnetoresistance exhibits non-saturated behavior and decreases with increasing temperature, turning negative above 10 K.
PHILOSOPHICAL MAGAZINE
(2022)
Article
Nanoscience & Nanotechnology
Frank Angeles, Samreen Khan, Victor H. H. Ortiz, Mingfei Xu, Shisong Luo, Dinusha Herath Mudiyanselage, Houqiang Fu, Yuji Zhao, Richard B. B. Wilson
Summary: The thermal conductivity of wide bandgap semiconductor thin films has a significant impact on the performance of various devices. However, accurately measuring the thermal conductivity of sub-micrometer thin films with high values is difficult. This study proposes a combination of magneto-optic thermometry and TiN interfacial layers to enhance the spatiotemporal resolution of pump/probe thermal transport measurements.
Article
Engineering, Multidisciplinary
Xi-xin Wang, Yong Zhao, Ri-qing Lv, Hong-kun Zheng
Summary: An optic-fiber sensor utilizing the magneto-shape effect of magnetic fluid has been proposed for measuring magnetic field direction. The sensor is simple to make, highly sensitive and consumes little fabrication. It can monitor vector magnetic field without needing a non-circular symmetrical structure, showing potential applications in electronic power industry and aerospace.
Article
Instruments & Instrumentation
A. Brozyniak, G. Mendirek, M. Hohage, A. Navarro-Quezada, P. Zeppenfeld
Summary: The article introduces a compact in situ electromagnet with an active cooling system for use in ultrahigh vacuum environments, which enhances thermal stability and electric current capacity. Integrated into a spectroscopy system, the electromagnet allows real-time and in situ investigations of magnetic thin films and interfaces.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Nanoscience & Nanotechnology
Luu Ly Pham Ngoc, Kyuhwe Kang, Gyung-Min Choi
Summary: This study utilizes time-resolved magneto-optical Kerr effect measurement and pump-probe technique to investigate the thermal characterization of various materials, determining their anisotropic thermal conductivity and providing strong support for materials thermal management.
Article
Physics, Applied
C. Papusoi, T. Le, R. Admana, P. Mani, M. Desai
Summary: Vertical exchange coupling between adjacent layers in a magnetic multilayer has a significant impact on the magnetization reversal mechanism. Through time-resolved magneto-optic Kerr effect (TRMOKE), the study evaluated the vertical exchange coupling energy per unit film surface and found that two different spin models offered similar values for the exchange coupling energy under certain conditions.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Applied
Fayuan Zhang, Yuxi Qiao, Jiajia Wang, Wenjing Liu, Shan Qiao
Summary: The study conducted spatially resolved measurements of magnon temperature in yttrium iron garnet using the magneto-optic Kerr effect. The results indicate a strong interaction between magnon and phonon subsystems in YIG, with an upper limit of the phonon-magnon thermal relaxation length of 1.4 mm, validating the effectiveness of this method.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Bhagwati Prasad, Yen-Lin Huang, Rajesh Chopdekar, Zuhuang Chen, James Steffes, Sujit Das, Qian Li, Mengmeng Yang, Chia-Ching Lin, Tanay Gosavi, Dmitri E. Nikonov, Zi Qiang Qiu, Lane W. Martin, Bryan D. Huey, Ian Young, Jorge Iniguez, Sasikanth Manipatruni, Ramamoorthy Ramesh
ADVANCED MATERIALS
(2020)
Article
Physics, Applied
Matthew T. Hardy, Eric N. Jin, Neeraj Nepal, D. Scott Katzer, Brian P. Downey, Vikrant J. Gokhale, David F. Storm, David J. Meyer
APPLIED PHYSICS EXPRESS
(2020)
Article
Physics, Applied
Senfu Zhang, Junwei Zhang, Yan Wen, Yong Peng, Ziqiang Qiu, Takao Matsumoto, Xixiang Zhang
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Multidisciplinary
Maciej Dabrowski, Takafumi Nakano, David M. Burn, Andreas Frisk, David G. Newman, Christoph Klewe, Qian Li, Mengmeng Yang, Padraic Shafer, Elke Arenholz, Thorsten Hesjedal, Gerrit van der Laan, Zi Q. Qiu, Robert J. Hicken
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Applied
E. N. Jin, A. C. Lang, M. T. Hardy, N. Nepal, D. S. Katzer, D. F. Storm, B. P. Downey, D. J. Meyer
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Multidisciplinary Sciences
Yen-Lin Huang, Dmitri Nikonov, Christopher Addiego, Rajesh Chopdekar, Bhagwati Prasad, Lei Zhang, Jyotirmoy Chatterjee, Heng-Jui Liu, Alan Farhan, Ying-Hao Chug, Mengmeng Yang, Maya Ramesh, Zi Qiang Qiu, Bryan D. Huey, Chia-Ching Lin, Tanay Gosavi, Jorge Iniguez, Jeffrey Bokor, Xiaoqing Pan, Ian Young, Lane W. Martin, Ramamoorthy Ramesh
NATURE COMMUNICATIONS
(2020)
Article
Physics, Applied
Alyssa L. Mock, Alan G. Jacobs, Eric N. Jin, Matthew T. Hardy, Marko J. Tadjer
APPLIED PHYSICS LETTERS
(2020)
Article
Materials Science, Coatings & Films
Neeraj Nepal, D. Scott Katzer, Brian P. Downey, Virginia D. Wheeler, Luke O. Nyakiti, David F. Storm, Matthew T. Hardy, Jaime A. Freitas, Eric N. Jin, Diego Vaca, Luke Yates, Samuel Graham, Satish Kumar, David J. Meyer
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2020)
Article
Nanoscience & Nanotechnology
Eric N. Jin, Brian P. Downey, Vikrant J. Gokhale, Jason A. Roussos, Matthew T. Hardy, Tyler A. Growden, Neeraj Nepal, D. Scott Katzer, Jeffrey P. Calame, David J. Meyer
Summary: The epitaxial integration of high dielectric constant Sr1-xCaxTiO3 films onto AlGaN/GaN/4H-SiC structures has shown promising results in improving electric field management and device breakdown voltage without significant impact on channel transport properties. The films exhibit minimal hysteresis, high dielectric constant, and reduced leakage compared to Schottky contacted samples, indicating their potential for enhancing functionality and performance in high-power RF and power-switching applications.
Article
Physics, Applied
Eric N. Jin, Andrew C. Lang, Brian P. Downey, Vikrant J. Gokhale, Matthew T. Hardy, Neeraj Nepal, D. Scott Katzer, Virginia D. Wheeler
Summary: This work demonstrates the growth of SrTiO3 thin films on high-electron-mobility transistor heterostructures based on an emergent ultra-wide bandgap (UWBG) semiconductor ScAlN, and investigates the effects of pre-growth chemical treatments on the heterostructure properties. It is found that among the treatments studied, the solvent and sulfuric-phosphoric acid cleans have the least disruptive effects on the electrical properties of the GaN channel, while the sulfuric-phosphoric acid clean results in the best oxide crystallinity. The transmission electron microscopy imaging reveals that intermixing occurs at the oxide-nitride interfaces for both samples, but the sample treated with sulfuric-phosphoric acid has lower interface roughness and larger STO grain size.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Eric N. Jin, Matthew T. Hardy, Alyssa L. Mock, John L. Lyons, Alan R. Kramer, Marko J. Tadjer, Neeraj Nepal, D. Scott Katzer, David J. Meyer
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Engineering, Electrical & Electronic
Douglas Scott Katzer, Matthew T. Hardy, Neeraj Nepal, Brian P. Downey, Eric N. Jin, David J. Meyer
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2020)
Article
Materials Science, Multidisciplinary
Yu Yang, Jianhui Liang, Qian Li, Gong Chen, Chao Zhou, Jia Xu, Lu Sun, Mengmeng Yang, Alpha T. N'Diaye, Zi Qiang Qiu, Yizheng Wu
Article
Quantum Science & Technology
Mengmeng Yang, Qian Li, Rajesh Chopdekar, Camelia Stan, Stefano Cabrini, Jun Woo Choi, Sheng Wang, Tianye Wang, Nan Gao, Andreas Scholl, Nobumichi Tamura, Chanyong Hwang, Feng Wang, Ziqiang Qiu
ADVANCED QUANTUM TECHNOLOGIES
(2020)
Article
Materials Science, Multidisciplinary
M. Yang, Q. Li, D. Hou, P. Shafer, A. T. N'Diaye, C. Klewe, T. Y. Wang, Xixiang Zhang, C. Hwang, Z. Q. Qiu
