Article
Materials Science, Ceramics
Jae-Hyeon Cho, Seongwoo Cho, Jun Han Lee, Haribabu Palneedi, Ju-Hyeon Lee, Hwang-Pill Kim, Nyun Jong Lee, Siriporn Tigunta, Soodkhet Pojprapai, Sanghoon Kim, Jungho Ryu, Yoon Seok Oh, Seungbum Hong, Wook Jo
Summary: Intentional subtraction of Fe ions in NiFe2O4 induces spin canting and enhances magnetoelectric coupling, while also generating ferroelectricity. The peak enhancement in magnetoelectric coupling strength is observed when about 30% of Fe ions are subtracted, after which further removal of Fe ions affects the material's structure.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Cai Jin, Xiaowen Li, Wenqiao Han, Qi Liu, Sixia Hu, Yanjiang Ji, Zedong Xu, Songbai Hu, Mao Ye, Meng Gu, Yuanmin Zhu, Lang Chen
Summary: Integrating materials characteristics through constructing artificial superlattices has led to the successful synthesis of BiFeO3/BiMnO3 SLs with considerable ferroelectric polarizations and tunable magnetic moments. The tunable magnetic moments of SLs are closely linked to the dimensionality of BiFeO3 layers, with the superexchange interaction of Fe-O-Mn in SLs tending towards antiferromagnetic rather than ferromagnetic as the dimensionality of BiFeO3 per period is reduced. This interlayer modulation effect in SLs offers an attractive way to precisely control multiple order parameters in a multiferroic oxide system.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Ceramics
Jae-Hyeon Cho, Yu Jin Kim, Su Hwan Kim, Young-Jin Lee, Jun-Yong Choi, Geon-Tae Hwang, Jungho Ryu, Sang Kyu Kwak, Wook Jo
Summary: The study found that manipulating spin canting through composition-induced structural transition in nickel-zinc ferrite can enhance magnetoelectric coupling efficiency. The ME coefficient was maximized at 60% Zn substitution, showing about 70% enhancement compared to pure nickel ferrite.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Andres Camilo Garcia-Castro, Yanjun Ma, Zachary Romestan, Eric Bousquet, Cheng Cen, Aldo H. Romero
Summary: The discovery of room-temperature multiferroic orders in multi-anion SrNbO3-xNx thin films reveals a new design strategy for multiferroism via multi-anion engineering. The findings not only expand the pool of available multiferroic materials but also shed light on the potential for energy-efficient electrical control of magnetism through strong correlations between different material degrees of freedom.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Liu Yang, Yaxin Gao, Menghao Wu, Puru Jena
Summary: A unique triferroic coupling phenomenon, called interfacial Jahn-Teller triferroicity, has been observed in two-dimensional materials. This phenomenon allows for the control of ferroelectricity and magnetism through the manipulation of ferroelastic states, providing potential applications in efficient nonvolatile random-access memories.
Review
Multidisciplinary Sciences
Xiaoyan Yao, Di Hu, Shuai Dong
Summary: This review summarizes the recent progress in modulating the magnetic textures in two-dimensional (2D) van der Waals (vdW) materials, including temperature, magnetic field, sample thickness, electric current, electric field, strain, and stacking style.
Article
Materials Science, Multidisciplinary
Xunkai Duan, Hua Wang, Xiaofang Chen, Jingshan Qi
Summary: Using first-principles calculations and theoretical models, we have predicted a new class of single phase multiferroic materials, TMP2X6, which display multiple polarization phases and strong magnetoelectric coupling. These materials can be controlled by an external electric field, allowing electric-field control of magnetism. We have also revealed that the strong magnetoelectric coupling is achieved through reducing the dimension and symmetry.
Article
Materials Science, Ceramics
Mei Ying Liu, Tu Lai Sun, Ting Ting Gao, Zhi Ping Bian, Zhen Lin Luo, Xiao Qiang Liu, Xiang Ming Chen
Summary: This study enhances the ferroelectricity of SmFeO3 thin films by introducing a CaTiO3 blocking layer, and verifies the room-temperature ferroelectricity and magnetoelectric coupling effect.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Multidisciplinary Sciences
Shuai Ning, Abinash Kumar, Konstantin Klyukin, Eunsoo Cho, Jong Heon Kim, Tingyu Su, Hyun-Suk Kim, James M. LeBeau, Bilge Yildiz, Caroline A. Ross
Summary: By studying the antisite defect mechanism in yttrium orthoferrite, a new pathway for introducing ferroelectricity in magnetically ordered orthoferrites was revealed, expanding the potential for functional applications of these materials.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Paresh C. Rout, Avijeet Ray, Udo Schwingenschlogl
Summary: We studied the properties of the SrCrO3/YCrO3 superlattice and found that it exhibits A-type antiferromagnetic ordering. The superlattice becomes ferromagnetic under compressive strain and has a significantly higher ferroelectric polarization compared to other superlattices. It also shows a charge-order-driven p-type semiconducting state and has potential applications in multistate memory and spintronics.
NPJ COMPUTATIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Hou-Yi Lyu, Zhen Zhang, Jing-Yang You, Qing-Bo Yan, Gang Su
Summary: This study achieved 2D multiferroics using intercalation technology, which exhibited excellent ferroelectric and ferromagnetic properties. It paves a practical path for the application of 2D multiferroics in spintronics.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Xueying Liu, Chenhai Shen, Xueping Li, Tianxing Wang, Mengjie He, Lin Li, Ying Wang, Jingbo Li, Congxin Xia
Summary: Due to unique magnetoelectric coupling effects, two-dimensional multiferroic van der Waals heterostructures (vdWHs) show great potential for next-generation information processing and storage devices. By designing vdWHs with different stacking patterns, different band alignments and semiconductor transitions can be achieved, providing a possible route to realize nanoscale multifunctional spintronic devices.
Article
Materials Science, Multidisciplinary
Vilmos Kocsis, Yusuke Tokunaga, Yoshinori Tokura, Yasujiro Taguchi
Summary: The study reveals that the linear magnetoelectric effect allows for selection or switching between antiferromagnetic states through the application of electric and magnetic fields, which are preserved by energy barriers. Experimental results show that the field and temperature variation of the coercive field for switching is similar to the theoretical model. Investigation into the dynamics of antiferromagnetic domain switching confirms a power-law frequency dependence, indicating one-dimensional domain wall propagation.
Article
Physics, Applied
Dong Li, Pengyu Liu, Ruiman He, Yihang Bai, Chang Liu, Bing Wang, Guanwei Jia
Summary: We propose a 2D multiferroic material, VSI2 monolayer, with both ferromagnetic and ferroelectric properties. It shows robust ferroelectricity and large magnetic anisotropy energy. Biaxial strain can change its magnetic and ferroelectric properties, providing opportunities for magnetic-electric control and memory devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Baishun Yang, Bin Shao, Jianfeng Wang, Yang Li, ChiYung Yam, Shengbai Zhang, Bing Huang
Summary: This paper presents a general mechanism to achieve semiconducting 2D multiferroics through van der Waals heterojunction engineering, showcasing the unique properties of the heterostructure composed of a magnetic bilayer and a ferroelectric monolayer, resulting in a strong asymmetrical magnetoelectric coupling mechanism due to opposite polarization configurations.
Article
Nanoscience & Nanotechnology
Stephen S. Sasaki, Oleg G. Udalov, Jeffrey A. Kurish, Momoko Ishii, Igor S. Beloborodov, Sarah H. Tolbert
Summary: In this work, a granular multiferroic composite is demonstrated where the magnetic state of nanocrystals is modified by tuning the interparticle exchange coupling using an applied electric field. The findings suggest that by changing the local dielectric environment, the ensemble magnetic coercivity and the superparamagnetic-to-ferromagnetic phase transition temperature can be controlled. This study is important for the development of new multiferroic materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Sergey V. Streltsov, Roman E. Ryltsev, Nikolay M. Chtchelkatchev
Summary: In recent years, the A-site ordered half-doped double-perovskite manganites RBaMn2O6 have gained significant attention for their exceptional physical properties and potential applications. This study investigates the origin of the ground-state structure and the electronic and magnetic properties of PrBaMn2O6. The findings offer insights into understanding the contradictions in experimental data and provide a theoretical foundation for refining the ground state structures in other RBaMn2O6 compounds.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
L. Kamaeva, M. Magnitskaya, A. A. Suslov, A. Tsvyashchenko, N. M. Chtchelkatchev
Summary: In this study, the stability and phase transitions of the non-equilibrium B20-RhGe phase, which can only be obtained under high pressure, were investigated using ab initio calculations and experimental methods. The results revealed the thermal stability and heating-induced phase transformations of RhGe samples, and were validated by calorimetric measurements and X-ray diffraction analysis.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Physics, Condensed Matter
R. E. Ryltsev, N. M. Chtchelkatchev
Summary: Two-length-scale pair potentials in condensed matter systems lead to complex behavior, and we find that different two-length-scale systems with similar radial distribution functions exhibit the same freezing behavior. By validating the similarity between two dimensionless parameters, we propose a method to predict the formation of solid phases.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Pharmacology & Pharmacy
Sahar Jafari, Ittai S. Baum, Oleg G. Udalov, Yichien Lee, Olga Rodriguez, Stanley T. Fricke, Maryam Jafari, Mostafa Amini, Roland Probst, Xinyao Tang, Cheng Chen, David J. Ariando, Anjana Hevaganinge, Lamar O. Mair, Christopher Albanese, Irving N. Weinberg
Summary: By tuning magnetic pulses, the blood brain barrier can be safely and effectively opened to enhance drug transport. This method can be applied in the treatment of various brain disorders.
Article
Materials Science, Multidisciplinary
Vladimir P. Filonenko, Rustem Kh. Bagramov, Igor P. Zibrov, Nikolay M. Chtchelkachev, Sergey G. Lyapin, Pavel V. Enkovich, Vadim V. Brazhkin
Summary: This study synthesized heavily boron-doped graphite using a high-pressure technique and investigated the substitution of carbon by boron in the graphene layer. The transformation of heavily boron-doped graphite into a diamond lattice was observed at a pressure of approximately 7.5 GPa, and five-pointed star-shaped boron-doped diamond crystals were discovered. The growth mechanism of these crystals involves cyclic twinning and is likely influenced by the presence of a fluid phase and the presence of boron in the diamond lattice.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Multidisciplinary Sciences
V. E. Valiulin, N. M. Chtchelkatchev, A. Mikheyenkov, V. M. Vinokur
Summary: The study shows that an array of nanomagnets coupled by real retarded exchange interactions can develop a new state of matter, termed as time frustrated matter (TFM). In a spin system with time-dependent retarded exchange interactions, a single spin flip does not instantly influence other spins but after some delay, leading to a change in the sign of the exchange interaction and the emergence of a non-Markovian temporal evolution.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
D. O. Skanchenko, E. V. Altynbaev, V. A. Sidorov, G. Chaboussant, N. Martin, A. E. Petrova, D. A. Salamatin, S. V. Grigoriev, N. M. Chtchelkatchev, M. V. Magnitskaya, A. V. Tsvyaschenko
Summary: We conducted a comprehensive study on Fe1-xRhxGe compounds, covering the entire concentration range using various techniques. We discovered an internal splitting of crystallographic and magnetic states for intermediate compositions, despite their apparent similarity. Theoretical analysis and experimental data revealed that this splitting occurs within single crystallites with a common space group, but with different magnetic structures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
N. M. Chtchelkatchev, R. E. Ryltsev, A. V. Mikheyenkov, V. E. Valiulin, I. Ya. Polishchuk
Summary: A general problem in studying supercooled liquids and glasses is the long relaxation times that make it difficult to determine dynamic characteristics explicitly. To solve this issue, one approach is to extrapolate values of a dynamical property, such as viscosity, from a temperature range where it can be directly measured or simulated to the low-temperature region. However, such extrapolations often lead to contradictory results due to different fitting functions. This paper proposes a model-free statistical algorithm for low-temperature extrapolation of liquid viscosity and diffusion coefficient, utilizing numerical analytical continuation and error correction procedures. The method has been tested on various glass-forming systems and showed good stability and predictability.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
S. G. Menshikova, N. M. Chtchelkatchev, V. V. Brazhkin
Summary: High pressures enable the synthesis of new metastable compounds that remain intact under normal conditions. In this study, we investigated the structure of a glass-forming eutectic alloy obtained through rapid cooling from the melt at a temperature of 1800 K and a pressure of 10 GPa. Our findings reveal the formation of new stable crystalline phases with cubic and tetragonal structures in the alloy.
Article
Physics, Multidisciplinary
Valerii E. Valiulin, Andrey V. V. Mikheyenkov, Nikolay M. Chtchelkatchev, Kliment I. Kugel
Summary: The Kugel-Khomskii model, which involves spin and orbital degrees of freedom, serves as a useful tool for studying important aspects of quantum information processing, such as robust gaps in entanglement spectra. In this study, we demonstrate that entanglement can remain robust even under temperature effects within a wide range of parameters. Interestingly, the temperature dependence of entanglement often exhibits a nonmonotonic behavior, with ranges of model parameters where entanglement is absent at zero temperature, but emerges, reaches a maximum, and then disappears with increasing temperature.
SCIPOST PHYSICS CORE
(2023)
Article
Chemistry, Physical
N. M. Chtchelkatchev, R. E. Ryltsev, M. V. Magnitskaya, S. M. Gorbunov, K. A. Cherednichenko, V. L. Solozhenko, V. V. Brazhkin
Summary: Boron phosphide (BP) is a hard semiconductor composed of light elements and has potential applications under extreme conditions. The behavior of BP at high temperatures and pressures is not well understood, but machine learning interatomic potentials provide a unique opportunity to study it accurately. A deep machine learning potential (DP) has been developed for accurate simulations of BP, which agrees with experimental and ab initio molecular dynamics data. The simulations reveal structural transformations and anomalous behavior of BP under compression and raise open questions for further studies.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
O. G. Udalov, I. S. Beloborodov
Summary: This study discusses the magnetic oxide/heavy metal oxide hybrid film on a substrate with high dielectric constant, using the double exchange model to describe the system behavior. The interface between the two oxide films generates a unique Rashba spin-orbit interaction, resulting in phase separation in the magnetic film. The combination of phase separation and spin-orbit coupling leads to the formation of electrically charged magnetic clusters with skyrmions, where suitable cluster sizes for skyrmion formation only occur on a substrate with a high dielectric constant.
Article
Engineering, Electrical & Electronic
Ilya O. Gorshkov, Roman V. Gorev, Maksim V. Sapozhnikov, Oleg G. Udalov
Summary: In this study, we investigate the control of skyrmions in an artificial ultrathin magnetic film with perpendicular anisotropy. By numerically simulating the motion of skyrmions induced by the spatial gradient of the Dzyaloshinskii-Moriya interaction (DMI) strength, we demonstrate that creating a DMI gradient is an efficient way to manipulate skyrmions. Furthermore, experimentally achievable DMI gradients can be as effective as spin-polarized electric currents, but with a weaker skyrmion Hall effect. These DMI gradients can be created by applying mechanical strain in a ferroelectric-ferromagnetic hybrid system, providing an alternative approach for skyrmion manipulation.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
M. Sapozhnikov, R. Gorev, E. Skorokhodov, N. S. Gusev, A. Sadovnikov, O. G. Udalov
Summary: The influence of the anisotropic interfacial Dzyaloshinskii-Moriya interaction (iDMI) on magnetic domain structure in thin Co/Pt films is investigated using magnetic force microscopy. Strong iDMI anisotropy induced by in-plane uniaxial mechanical strain leads to the transformation of an isotropic labyrinth domain structure to oriented stripe domains and zigzag domain structures.
