Article
Chemistry, Multidisciplinary
Zhi-Cheng Wang, Jared D. Rogers, Xiaohan Yao, Renee Nichols, Kemal Atay, Bochao Xu, Jacob Franklin, Ilya Sochnikov, Philip J. Ryan, Daniel Haskel, Fazel Tafti
Summary: The study revealed that EuCd2P2 exhibits enormous colossal magnetoresistance (CMR) at low temperatures without requiring manganese, oxygen, mixed valence, or cubic perovskite structure. This phenomenon is attributed to strong magnetic fluctuations, leading to new opportunities for materials and technologies related to antiferromagnetic spintronics.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jun-Yung Oh, Young-Jae Ko, Dong-Seok Yang, Jung-Min Lee, W. N. Kang, Byeongwon Kang
Summary: The study investigates the impact of strain states on magnetic flux pinning in GdBCO and LSMO bilayer systems grown on different substrates, with XAS revealing distortions in the MnO6 octahedron. Tensile strain on STO substrate causes slight elongation of in-plane MnO6 octahedra and reduced magnetization anisotropy in LSMO; while compressive strain on LAO substrate results in significant elongation of out-of-plane MnO6 octahedra and large magnetic anisotropy.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Samir Kumar Giri, Wasim Akram, Manisha Bansal, Tuhin Maity
Summary: The effect of a three-dimensional strain state on the magnetocaloric properties of epitaxial La0.8Ca0.2MnO3 thin films grown on different substrates has been studied. It was found that both LCMO/STO and LCMO/LAO show the maximum entropy change at a critical thickness of 75 nm, but LCMO/LAO exhibits a wider transition temperature region. The tuning of magnetocaloric effect can be achieved by changing the strain type.
Article
Materials Science, Multidisciplinary
Muhsin Abdul Karim, Jiashu Wang, David Graf, Kota Yoshimura, Sara Bey, Tatyana Orlova, Maksym Zhukovskyi, Xinyu Liu, Badih A. Assaf
Summary: This study reports on the synthesis of c-axis-oriented EuIn2As2 films using molecular beam epitaxy, and the stabilization of their topologically nontrivial properties by carefully tuning the substrate temperature. The magnetic properties of these films are similar to the single crystal, but their resistivity is enhanced at lower growth temperatures.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Chemistry, Physical
Gian Marco Pierantozzi, Giovanni Vinai, Aleksandr Yu Petrov, Alessandro De Vita, Federico Motti, Vincent Polewczyk, Debashis Mondal, Tommaso Pincelli, Riccardo Cucini, Chiara Bigi, Ivana Vobornik, Jun Fujii, Piero Torelli, Francesco Offi, Giorgio Rossi, Giancarlo Panaccione, Francesco Borgatti
Summary: In this study, the relationship between ferromagnetism and metallicity in strained La0.67Ca0.33MnO3 films was investigated. It was found that the half-metallicity of the ferromagnetic metallic (FMM) phase is correlated with spin polarization and occupancy at the Fermi level. These results suggest that the half-metallic behavior predicted by a double-exchange model persists even in phase-separated manganites.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Hendrik Meer, Felix Schreiber, Christin Schmitt, Rafael Ramos, Eiji Saitoh, Olena Gomonay, Jairo Sinova, Lorenzo Baldrati, Mathias Klaeui
Summary: Researchers have unraveled the mechanism of current-induced magnetic switching in insulating antiferromagnet/heavy metal systems using concurrent transport and magneto-optical measurements. Different final states of the switching in specially engineered NiO/Pt bilayers devices were observed with different electrical pulsing and device geometries, attributed to the thermomagnetoelastic switching mechanism combined with thermal excitations. This noncontact mechanism provides a potential explanation for previously reported contradicting observations of switching final state attributed to spin-orbit torque mechanisms.
Article
Engineering, Electrical & Electronic
P. G. R. Achary, Sonali Behera, R. N. P. Choudhary, S. K. Parida
Summary: A solid-state reaction technique was used to prepare cerium modified strontium manganite, and its various properties were characterized. The material exhibited appropriate structural parameters, an optical bandgap suitable for photovoltaic applications, as well as possible ferroelectricity and Ohmic conduction behavior.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Multidisciplinary Sciences
Sevdenur Arpaci, Victor Lopez-Dominguez, Jiacheng Shi, Luis Sanchez-Tejerina, Francesca Garesci, Chulin Wang, Xueting Yan, Vinod K. Sangwan, Matthew A. Grayson, Mark C. Hersam, Giovanni Finocchio, Pedram Khalili Amiri
Summary: There is growing interest in using antiferromagnetic materials for memory devices, with recent studies showing complications in interpreting resistive switching signals generated by high current densities in antiferromagnetic/heavy metal bilayers. Arpaci et al have introduced an experimental protocol to distinguish between magnetic and nonmagnetic switching signals in such structures, showcasing their method in IrMn3/Pt devices. The researchers utilized a six-terminal double-cross device to demonstrate reversible switching in the presence of IrMn3, effectively eliminating any non-magnetic switching artifacts.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
N. Zurauskiene, V Rudokas, S. Kersulis, V Stankevic, D. Pavilonis, V Plausinaitiene, M. Vagner, S. Balevicius
Summary: The study found that Co-doped LCMCO films exhibit higher values of MR and sensitivity at low temperatures, showing potential for sensor applications. Different models were proposed to explain the resistance relaxation processes observed, providing insights into the mechanisms behind the relaxation phenomena in these films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Review
Chemistry, Physical
Susan M. Kauzlarich
Summary: The synthesis of new compounds and crystal structures is important for technologically relevant materials. The Zintl concept is a guide for designing new solid-state compounds. Zintl phases provide a palette for substitutions and contribute to various properties.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
N. Soylu Koc, R. Terzioglu, O. Ozturk, C. Terzioglu
Summary: This study investigates the structural and dynamic nanohardness properties of yttrium (Y) substituted La1.4Ca1.6Mn2O7 manganites. Various techniques including XRD, SEM, EDS and dynamic nanohardness measurements were used to evaluate the structural properties and surface morphologies. The results were compared with other rare-earth substituted lanthanum manganites to assess the effects of Y substitution. Mechanical properties obtained from dynamic micro-hardness tests and different models were applied to determine the measured and true micro-hardness values.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Wolfgang Simeth, Andreas Bauer, Christian Franz, Aisha Aqeel, Pablo J. Bereciartua, Jennifer A. Sears, Sonia Francoual, Christian H. Back, Christian Pfleiderer
Summary: We present resonant elastic x-ray scattering results on EuPtSi3, revealing a combination of magnetic phases suggesting a highly unusual competition between antiferromagnetic exchange interactions with Dzyaloshinsky-Moriya spin-orbit coupling of similar strength. By utilizing different scattering geometries and full linear polarization analysis, we unambiguously identify magnetic scattering contributions. The phase diagram of EuPtSi3 includes various long-wavelength modulations and distinct superstructures for different magnetic field orientations.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Analytical
Nerija Zurauskiene, Voitech Stankevic, Skirmantas Kersulis, Milita Vagner, Valentina Plausinaitiene, Jorunas Dobilas, Remigijus Vasiliauskas, Martynas Skapas, Mykola Koliada, Jaroslaw Pietosa, Andrzej Wisniewski
Summary: The results of this study show that the microstructure, resistivity, and magnetoresistive properties of LSMO films grown by the pulsed injection MOCVD technique are strongly influenced by the concentrations of strontium and manganese. The highest metal-insulator transition temperature (T-m) observed was 270 K, while the highest low-field magnetoresistance at room temperature was 0.8%.
Article
Chemistry, Analytical
Voitech Stankevic, Nerija Zurauskiene, Skirmantas Kersulis, Valentina Plausinaitiene, Rasuole Lukose, Jonas Klimantavicius, Sonata Tolvaisiene, Martynas Skapas, Algirdas Selskis, Saulius Balevicius
Summary: This paper presents the colossal magnetoresistance (CMR) properties of La0.83Sr0.17Mn1.21O3 (LSMO) films grown using pulsed injection MOCVD technique on different substrates. The results show that the morphology, microstructure, and magnetoresistive properties of the films strongly depend on the substrate used. LSMO/quartz films exhibit higher low-field MR values and sensitivity, making them promising for magnetic sensor applications.
Article
Chemistry, Physical
Qizhong Zhao, Fanghua Tian, Tieyan Chang, Kaiyan Cao, Dingchen Wang, Yin Zhang, Chao Zhou, Xiaoqin Ke, Wenliang Zuo, Yu Wang, Sen Yang, Xiaoping Song
Summary: In this study, the magnetization reversal phenomenon in the Ni20Mn3B6 alloy was investigated at low applied fields, revealing two compensation temperatures. The first temperature is attributed to competition between Mn atoms at different positions, while the second arises from moment rotation to satisfy Zeeman energy. This phenomenon enables tunable switching of magnetization between positive and negative values, providing potential applications in spintronic devices and magnetic storage materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Hee Taek Yi, Zhihua Chen, Antonio Facchetti, Vitaly Podzorov
ADVANCED FUNCTIONAL MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Hee Taek Yi, Xiaoxi Wu, Xiaoyang Zhu, Vitaly Podzorov
ADVANCED MATERIALS
(2016)
Article
Multidisciplinary Sciences
Y. Chen, H. T. Yi, X. Wu, R. Haroldson, Y. N. Gartstein, Y. I. Rodionov, K. S. Tikhonov, A. Zakhidov, X. -Y. Zhu, V. Podzorov
NATURE COMMUNICATIONS
(2016)
Article
Physics, Applied
Y. Chen, H. T. Yi, V. Podzorov
PHYSICAL REVIEW APPLIED
(2016)
Article
Materials Science, Multidisciplinary
Ryo Fujimoto, Shun Watanabe, Yu Yamashita, Junto Tsurumi, Hiroyuki Matsui, Tomokatsu Kushida, Chikahiko Mitsui, Hee Taek Yi, Vitaly Podzorov, Jun Takeya
ORGANIC ELECTRONICS
(2017)
Article
Multidisciplinary Sciences
H. T. Yi, N. Gartstein, V. Podzorov
SCIENTIFIC REPORTS
(2016)
Article
Physics, Applied
Hee Taek Yi, Pavel Irkhin, Prakriti P. Joshi, Yuri N. Gartstein, Xiaoyang Zhu, Vitaly Podzorov
PHYSICAL REVIEW APPLIED
(2018)
Article
Materials Science, Multidisciplinary
Hee Taek Yi, Sylvie Rangan, Boxin Tang, C. Daniel Frisbie, Robert A. Bartynski, Yuri N. Gartstein, Vitaly Podzorov
Article
Chemistry, Multidisciplinary
Hyun Ho Choi, Hee Taek Yi, Junto Tsurumi, Jae Joon Kim, Alejandro L. Briseno, Shun Watanabe, Jun Takeya, Kilwon Cho, Vitaly Podzorov
Article
Materials Science, Multidisciplinary
P. Lampen-Kelley, E. M. Clements, B. Casas, M. H. Phan, H. Srikanth, J. Marcin, I. Skorvanek, H. T. Yi, S. W. Cheong
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Chemistry, Physical
Wooseok Ki, Xiuze Hei, Hee Taek Yi, Wei Liu, Simon J. Teat, Mengjun Li, Yang Fang, Vitaly Podzorov, Eric Garfunkel, Jing Li
Summary: A group of copper iodide-based hybrid semiconductors with tunable photoluminescence and high charge carrier mobility has been synthesized and characterized, showing promising potential as a new type of emissive layer for LED devices.
CHEMISTRY OF MATERIALS
(2021)
Article
Physics, Applied
Xiong Yao, Hee Taek Yi, Deepti Jain, Seongshik Oh
Summary: The use of epitaxial Cr2O3 as a buffer layer and amorphous Cr2O3 as a capping layer in the growth of BST films demonstrated lower carrier density and higher mobility, highlighting the significance of interfacial layers in TI films.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Xiong Yao, Hee Taek Yi, Deepti Jain, Myung-Geun Han, Seongshik Oh
Summary: Researchers have successfully demonstrated tunable magnetic properties in topological heterostructures by controlling the thickness of nonmagnetic spacer layers. Additionally, the interaction between the MTIs and Cr2O3 buffer layers results in a robust topological Hall effect that can withstand high magnetic fields, showcasing the critical role of interfacial layers in thin-film topological materials.
Article
Chemistry, Multidisciplinary
Xiong Yao, Matthew Brahlek, Hee Taek Yi, Deepti Jain, Alessandro R. Mazza, Myung-Geun Han, Seongshik Oh
Summary: This study demonstrates a new method for growing a 4-fold compound superconductor on a 6-fold topological insulator, known as hybrid symmetry epitaxy, critical for stabilizing robust superconductivity.
Article
Chemistry, Multidisciplinary
Xiong Yao, Alessandro R. Mazza, Myung-Geun Han, Hee Taek Yi, Deepti Jain, Matthew Brahlek, Seongshik Oh
Summary: Epitaxial Fe(Te,Se) thin films have been successfully grown on a sixfold antiferromagnetic insulator, MnTe, exhibiting superconductivity with a clear transition around 11 K. The lattice match between Fe(Te,Se) and MnTe allows a hybrid symmetry epitaxy mode, and the Te/Fe flux ratio during deposition is critical for the superconductivity. This discovery opens up new possibilities for combining topological superconductivity with the rich physics of the MnTe-Bi2Te3 family.
