Article
Materials Science, Ceramics
Biswanath Bhoi, Mangesh S. Diware
Summary: This study demonstrates the growth of highly oriented YIG films on amorphous quartz substrates with excellent magnetic properties and structural characteristics. The formation of YIG with preferred orientation opens up significant opportunities for preparing textured or single crystal materials on amorphous substrates, which is important for integrated applications with semiconductor technology.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Physics, Applied
S. Satapathy, R. P. Pant, K. K. Maurya
Summary: We studied the structural and magnetization dynamics of Y3Fe5O12 (YIG) thin films grown on gadolinium gallium garnet (GGG[110]) substrate. Our results showed that the damping constant varies with the thickness and inhomogeneity of the films, with significant contributions from two-magnon scattering and inhomogeneity. The lowest damping constant and corresponding inhomogeneous broadening were observed in the case of 100 nm film.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Applied
Kenta Fukushima, Kohei Ueda, Naoki Moriuchi, Takanori Kida, Masayuki Hagiwara, Jobu Matsuno
Summary: We studied spin Hall magnetoresistance (SMR) in Pt/ferrimagnetic insulator Y3Fe5O12 (YIG) bilayers and found that large SMR can be achieved regardless of the crystallinity. The optimized Pt/YIG showed high interface quality and spin current performance. SMR correlated with magnetization, interface roughness, and carrier density.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Rohit Medwal, Angshuman Deka, Joseph Vimal Vas, Martial Duchamp, Hironori Asada, Surbhi Gupta, Yasuhiro Fukuma, Rajdeep Singh Rawat
Summary: This research demonstrates the growth-induced magneto-crystalline anisotropy in 40 nm epitaxial YIG thin films, enabling directional control over the generation and propagation of magnons. Ferromagnetic resonance measurements reveal the presence of cubic and non-cubic anisotropy in epitaxial YIG thin films.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Side Guo, Brendan McCullian, P. Chris Hammel, Fengyuan Yang
Summary: By growing a non-magnetic YSAG buffer layer on GGG, the exchange coupling between YIG and GGG is eliminated, resulting in significantly improved damping of YIG thin films at low temperatures.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Physical
Wenzhi Peng, Yulong Chen, Xuhao Yu, Dazhi Hou
Summary: The epitaxial growth of high-index Fe films on MgO(113) substrates with a large lattice constant mismatch is achieved using DC magnetron sputtering. XRD analysis confirms an Fe(103) out-of-plane orientation and reveals a parallel alignment between the Fe[010] direction and the MgO[11 over bar 0] direction within the film plane. These findings provide valuable insights for the advancement of research in the growth of high-index epitaxial films on substrates with large lattice constant mismatch.
Article
Materials Science, Multidisciplinary
E. Schmoranzerova, T. Ostatnicky, J. Kimak, D. Kriegner, H. Reichlova, R. Schlitz, A. Badura, Z. Soban, M. Muenzenberg, G. Jakob, E-J Guo, M. Klaeui, P. Nemec
Summary: We observed a giant quadratic magneto-optical effect in a 50 nm thick YIG layer. Through theoretical and experimental methods, we quantified both linear and quadratic magneto-optical effects in the studied material. The quadratic magneto-optical signal in the thin YIG film exceeded the linear response, reaching values of 450 grads that are comparable with Heusler alloys or ferromagnetic semiconductors. This enhancement is attributed to antiferromagnetic coupling of two Fe sublattices. We also found that the choice of experimental conditions, particularly the wavelength, is crucial for optimizing the quadratic magneto-optical effect.
Article
Physics, Applied
Hayato Mizuno, Rajkumar Modak, Takamasa Hirai, Atsushi Takahagi, Yuya Sakuraba, Ryo Iguchi, Ken-ichi Uchida
Summary: Researchers characterized Co2MnGa (CMG) Heusler alloy films grown on Y3Fe5O12 (YIG) and Gd3Ga5O12 (GGG) substrates at different deposition temperatures and investigated their thermo-spin and magneto-thermoelectric conversion properties. The results showed that high substrate temperatures during deposition enhanced the anomalous Ettingshausen effect in CMG and provided clues for constructing spin-caloritronic devices based on Heusler alloys.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
M. J. Roos, P. Quarterman, Jinjun Ding, Mingzhong Wu, B. J. Kirby, B. L. Zink
Summary: We provide evidence and characterization of a approximate to 4-nm-thick (Y1-xGdx)(3)Fe5O12 layer formed at the interface between a gadolinium gallium garnet (GGG) substrate and a sputtered Y3Fe5O12 (YIG) epitaxial film. Temperature-dependent polarized neutron reflectometry (PNR) and superconducting quantum interference device (SQUID) magnetometry show antiferromagnetic alignment of this interfacial layer with the bulk of the YIG film at low temperatures, with the alignment switching from antiparallel to parallel between 100 and 200 K in small applied magnetic fields.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Materials Science, Ceramics
Hyun Kyu Jung, Jeong Heum Mun, HanJin Lee, Jong Min Song, Dong Hun Kim
Summary: This study investigated the structural and magnetic properties of composite thin films composed of Y3Fe5O12 and BaTiO3 on SrTiO3 (001) substrates, revealing a self-assembled composite structure and distinct magnetic behaviors after annealing. The composite thin films grown at 650 degrees C exhibited different magnetic characteristics, indicating potential for the design of multi-bit memory devices.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Side Guo, Daniel Russell, Joseph Lanier, Haotian Da, P. Chris Hammel, Fengyuan Yang
Summary: In this study, ultralow damping at 2K was achieved in epitaxial Y3Fe5O12 thin films grown on a diamagnetic Y3Sc2Ga3O12 substrate that contains no rare-earth elements. By using these YIG films with ultralow damping, the strong coupling between magnons in patterned YIG thin films and microwave photons in a superconducting Nb resonator was demonstrated for the first time. This result paves the way for scalable hybrid quantum systems that integrate superconducting microwave resonators, YIG film magnon conduits, and superconducting qubits into on-chip quantum information science devices.
Article
Chemistry, Multidisciplinary
Mingi Choi, Jaedeok Paik, Donguk Kim, Deokyoon Woo, Jaeyeob Lee, Seo Ju Kim, Jongseo Lee, Wonyoung Lee
Summary: Researchers have successfully developed a new protonic ceramic fuel cell electrolyte with high electrochemical performance, surpassing values of previously reported PCFCs without the need for complex engineering, which has advanced the technology in this field.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Rahmat Hadi Saputro, Ryo Matsumura, Naoki Fukata
Summary: This study reveals the mechanism of dopant redistribution in Sb-doped Ge epitaxial films grown by molecular beam epitaxy, providing insights into the behavior of substituted Sb atoms in forming n-type Ge films. The understanding of these processes opens up possibilities for achieving n(+)-Ge thin films for Ge-based devices with improved electrical properties.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Physics, Multidisciplinary
Vivek Unikandanunni, Rajasekhar Medapalli, Marco Asa, Edoardo Albisetti, Daniela Petti, Riccardo Bertacco, Eric E. Fullerton, Stefano Bonetti
Summary: We investigate the spin dynamics driven by terahertz magnetic fields in epitaxial thin films of cobalt in its three crystalline phases. The angular momentum relaxation time is found to be the only material parameter needed to describe all the experimental evidence. Our experiments suggest a proportionality between the angular momentum relaxation time and the strength of the magnetocrystalline anisotropy.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Binod Paudel, Yogesh Sharma, Benjamin K. Derby, Ghanshyam Pilania, Matthew M. Schneider, Andrew C. Jones, Heinz Nakotte, Michael T. Pettes, Aiping Chen
Summary: This study investigates the influence of lattice strain on the magnetism of perovskite rare-earth chromite, YCrO3 (YCO) thin films. The combined theoretical and experimental approach reveals a correlation between lattice strain and magnetic properties in YCO films. The findings demonstrate the controllable functionalities of perovskite rare-earth chromites and related material systems using lattice strain.
MATERIALS RESEARCH LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Keng-Yuan Meng, Adam S. Ahmed, Mirko Bacani, Andrada-Oana Mandru, Xue Zhao, Nuria Bagues, Bryan D. Esser, Jose Flores, David W. McComb, Hans J. Hug, Fengyuan Yang
Article
Physics, Applied
Jacob J. Wisser, Satoru Emori, Lauren Riddiford, Aaron Altman, Peng Li, Krishnamurthy Mahalingam, Brittany T. Urwin, Brandon M. Howe, Michael R. Page, Alexander J. Grutter, Brian J. Kirby, Yuri Suzuki
APPLIED PHYSICS LETTERS
(2019)
Article
Physics, Applied
M. R. Page, B. A. McCullian, C. M. Purser, J. G. Schulze, T. M. Nakatani, C. S. Wolfe, J. R. Childress, M. E. McConney, B. M. Howe, P. C. Hammel, V. P. Bhallamudi
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Engineering, Electrical & Electronic
Vladimir L. Safonov, Michael E. McConney, Michael R. Page
IEEE TRANSACTIONS ON MAGNETICS
(2020)
Article
Engineering, Electrical & Electronic
Huaihao Chen, Xinjun Wang, Yuan Gao, Xiaoling Shi, Zhiguang Wang, Neville Sun, Mohsen Zaeimbashi, Xianfeng Liang, Yifan He, Cunzheng Dong, Yuyi Wei, John G. Jones, Michael E. McConney, Michael R. Page, Brandon M. Howe, Gail J. Brown, Nian-Xiang Sun
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2020)
Article
Physics, Applied
C. M. Purser, V. P. Bhallamudi, F. Guo, M. R. Page, Q. Guo, G. D. Fuchs, P. C. Hammel
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
B. A. McCullian, M. Chilcote, V. P. Bhallamudi, C. M. Purser, E. Johnston-Halperin, P. C. Hammel
PHYSICAL REVIEW APPLIED
(2020)
Article
Multidisciplinary Sciences
Brendan A. McCullian, Ahmed M. Thabt, Benjamin A. Gray, Alex L. Melendez, Michael S. Wolf, Vladimir L. Safonov, Denis V. Pelekhov, Vidya P. Bhallamudi, Michael R. Page, P. Chris Hammel
NATURE COMMUNICATIONS
(2020)
Article
Physics, Applied
Guanzhong Wu, Yang Cheng, Side Guo, Fengyuan Yang, Denis V. Pelekhov, P. Chris Hammel
Summary: FMRFM is a powerful scanned probe technique that can be used to measure Gilbert damping in ferromagnetic materials; spatially resolved imaging of Gilbert damping can be achieved by measuring the LM resonance cone angle using the LM resonance peak height; this approach allows determination of damping through field-swept FMRFM at a single excitation frequency.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Guanzhong Wu, Dongying Wang, Nishchhal Verma, Rahul Rao, Yang Cheng, Side Guo, Guixin Cao, Kenji Watanabe, Takashi Taniguchi, Chun Ning Lau, Fengyuan Yang, Mohit Randeria, Marc Bockrath, P. Chris Hammel
Summary: In this study, we report the emergence of perpendicular magnetic anisotropy and enhanced Gilbert damping induced by interfacial interactions in a heterostructure made of YIG and WTe2. The ability of WTe2 to enhance PMA in FM thin film, combined with its capability to generate out-of-plane damping like spin torque, makes it desirable for magnetic memory applications.
Article
Physics, Applied
Inhee Lee, Chi Zhang, Simranjeet Singh, Brendan McCullian, P. Chris Hammel
Summary: This study investigates the physical origin of nonlinear damping in Pt/Py heterostructures driven by spin-orbit torque, specifically examining the mode coupling between multiple auto-oscillatory modes. The results show a transition in the nonlinear damping and power redistribution among the modes, indicating the activation of another relaxation process. Additionally, the study finds that the mode coupling occurs through a nonthermal magnon-scattering process, independent of temperature. These findings have significant implications for understanding the complex nonlinear spin dynamics in multimode spin-wave systems and controlling the interaction between nonlinear magnetic oscillators.
PHYSICAL REVIEW APPLIED
(2022)
Article
Materials Science, Composites
Ying Liu, Peng Zhou, Rao Bidthanapally, Jitao Zhang, Wei Zhang, Michael R. Page, Tianjin Zhang, Gopalan Srinivasan
Summary: This report discusses the nature of strain and magnetic anisotropy in yttrium iron garnet (YIG) thin films on yttrium aluminum garnet (YAG) substrates. The study shows that the film thickness and substrate orientation have a significant impact on the strain and magnetic anisotropy. These findings are important for the development of self-biased sensors and high-frequency devices.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Microscopy
Bryan D. Esser, Joanne Etheridge
Summary: This paper describes a straightforward method for quantifying 4D-STEM data by utilizing the full flux of the electron beam, increasing experimental flexibility and enabling the generation of high-contrast STEM images while maintaining high angular resolution.
Article
Chemistry, Multidisciplinary
Brenton Cook, Philipp Reineck, Thomas Shiell, Jodie Bradby, Bryan D. Esser, Joanne Etheridge, Bianca Haberl, Reinhard Boehler, David R. Mckenzie, Dougal G. McCulloch
Summary: Diamond is a crucial material for biosensors, quantum computing, and space components due to its unique properties at the nanoscale. Researchers have successfully synthesized oriented, faceted diamond particles by flash laser heating of glassy carbon, and observed their microstructure and periodicity.
