Article
Chemistry, Physical
Wanting Yang, Xiong Luo, Xiaoxuan Ma, Shuang Zhu, Huan Song, Zhiqiang Sun, Baojuan Kang, Zhenjie Feng, Shixun Cao, Jin-Ke Bao
Summary: Yb0.25Tb0.75FeO3 shows exceptional magnetic and magnetocaloric properties due to its unique chemical composition. It exhibits higher spin switching temperature and multiple spin switching effects, making it a promising candidate for magnetic sensing and refrigeration devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhiqiang Sun, Huan Song, Shuang Zhu, Xiaoxuan Ma, Wanting Yang, Chenfei Shi, Baojuan Kang, Rongrong Jia, Jin-Ke Bao, Shixun Cao
Summary: We have prepared single crystal Nd0.8Pr0.2FeO3 and investigated the effect of Pr-doping on its magnetic properties. The Pr-doping lowered the spin reorientation transition temperature range and exhibited excellent properties in spin switching. Different types of spin switching events were observed in Nd0.8Pr0.2FeO3, and a significant magnetic entropy change was observed at low temperatures and high magnetic fields.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Zhiqiang Sun, Huan Song, Shuang Zhu, Xiaoxuan Ma, Wanting Yang, Chenfei Shi, Baojuan Kang, Rongrong Jia, Jin-Ke Bao, Shixun Cao
Summary: Single crystal Nd0.8Pr0.2FeO3 was prepared using the optical floating zone method, and the effect of Pr-doping on its magnetic properties was investigated. 20% Pr3+ doping exhibited superior spin switching performance at lower temperatures. These results provide a better understanding of the doped magnetic anisotropy in RFeO3 and offer new possibilities in the application of magnetic switching materials under low magnetic fields.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Xiaoxuan Ma, Wencheng Fan, Gang Zhao, Haiyang Chen, Chuankun Wang, Baojuan Kang, Zhenjie Feng, Jun-Yi Ge, Wei Ren, Shixun Cao
Summary: The magnetic behavior of a rare-earth orthoferrite ErFeO3 single crystal can be controlled by low magnetic fields, with two types of spin switching observed below the spin reorientation transition temperature. The applied magnetic fields can regulate the spin switching along the a-axis of the single crystal, while understanding the magnetic reversal effects can help explore potential applications in information devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Hongguang Zhang, Hu Qian, Liang Xie, Yanyan Guo, Yuzhuang Liu, Xuemin He
Summary: Non-magnetic Ga3+ doping in HoCrO3 triggers a new spin-reorientation transition and changes the crystal structure, electronic structure, Raman spectra, and magnetic behaviors. The dilution of magnetic couplings and appearance of complex magnetic transitions are observed with Ga3+ doping. Additionally, Ga3+ doping improves the magneto-caloric effect and refrigerant capacity, providing insights for optimizing MCE properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Hung Ba Tran, Yu-ichiro Matsushita
Summary: The mechanism of spin reorientation in Nd2Fe14B, the host crystal of neodymium permanent magnets, was investigated using first-principles calculations and Monte Carlo simulations. It was found that the spin reorientation in Nd2Fe14B is caused by Dzyaloshinskii-Moriya interactions, which have been often ignored in rare-earth bulk systems. This study also discovered that the spin reorientation in Nd2Fe14B results in the rotating magnetocaloric effect, which has potential practical applications. Moreover, the Dzyaloshinskii-Moriya interactions non-negligibly affect the physical properties of magnetic materials.
APPLIED MATERIALS TODAY
(2023)
Article
Materials Science, Multidisciplinary
Xiaoxuan Ma, Ning Yuan, Xiong Luo, Yunke Chen, Baojuan Kang, Wei Ren, Jincang Zhang, Shixun Cao
Summary: In perovskite structure YbFeO3 single crystal, a spin reorientation transition and a spin switching transition were reported. The spin reorientation occurs in the temperature range of 6-8 K, while the spin switching is found at around 20 K. At various temperatures above 8 K, magnetic field induced spin switching is observed.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
M. Anas, Sarita Rajput, Ankita Singh, Rinku Kumar, T. Maitra, V. K. Malik
Summary: The magnetic and magnetocaloric properties of Nd0.5Dy0.5CrO3 have been studied. The Cr3+ magnetic moments exhibit an antiferromagnetic ordering below 180 K and a spin reorientation at around 60 K. Negative magnetization is observed below 5 K. The maximum magnetic entropy change is found to be 8.71 J kg(-1) K-1 at 7.3 K and 10 T. The experimentally obtained values are in agreement with the theoretically calculated values.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
Keunki Cho, Wonhyuk Shon, Jaehan Bae, Jaewoong Lee, Seungha Yoon, Jinhee Kim, Jong-Soo Rhyee, Beongki Cho
Summary: The magnetocaloric properties of the NdAlGe single crystal with I4(1)md structure were investigated. It was found that the magnetization of the crystal was highly anisotropic, with stable antiferromagnetic transition along the a-axis and spin reorientation at low temperature. The abrupt change of the magnetic entropy during the metamagnetic transition resulted in a significant magnetocaloric effect.
Article
Chemistry, Physical
Xiaoxuan Ma, Rongrong Jia, Gang Zhao, Shuang Zhu, Wanting Yang, Wencheng Fan, Haiyang Chen, Baojuan Kang, Jin-Ke Bao, Shixun Cao
Summary: The introduction of Yb ions into SmFeO3 single crystal can modulate the spin reorientation transition temperature and enhance the magnetization compensation temperature. Different spin switching effects can be observed under applied magnetic fields, including a unique spin switching phenomenon at lower magnetic fields during room temperature spin reorientation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Huan Song, Wencheng Fan, Rongrong Jia, Zhiqiang Sun, Xiaoxuan Ma, Wanting Yang, Shuang Zhu, Baojuan Kang, Zhenjie Feng, Shixun Cao
Summary: A high-quality TmFeO3 single crystal with a length of 50 mm was successfully prepared using a four-mirror optical floating zone furnace. The crystal's quality and orientation were determined using an X-ray diffractometer and Laue back reflection camera. The magnetic properties of the crystal were systematically studied, revealing a spin reorientation transition and temperature-induced spin switching not previously reported. These findings suggest the crystal's potential application in future spintronic devices, as the triggering temperatures of the spin switching can be controlled by adjusting external magnetic fields.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Multidisciplinary
Wencheng Fan, Haiyang Chen, Gang Zhao, Xiaoxuan Ma, Ramki Chakaravarthy, Baojuan Kang, Wenlai Lu, Wei Ren, Jincang Zhang, Shixun Cao
Summary: In PrFe1-xMnxO3 single crystals, the spin reorientation transition temperature can be modulated by varying the Mn concentration, which is of great importance for spin control.
FRONTIERS OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Lingling Wang, Linwen Jiang, Jiamin Shang, Jiangtao Li, Liangbi Su, E. D. Mishina, Anhua Wu
Summary: Single crystal Er0.4Gd0.6FeO3 (EGFO) with special magnetic characteristics, including nonzero spontaneous magnetic moment along crystalline b-axis and 2-fold spin reorientation transition, was grown by optical floating-zone method. The phenomenon is unusual for most of rare-earth orthoferrites and the transition result from the competitions of different interactions at different temperature areas. The work is meaningful for further studying the physical phenomenons in RFeO3 and their potential applications.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Gang Zhao, Wencheng Fan, Haiyang Chen, Xiaoxuan Ma, Baojuan Kang, Wenlai Lu, Jincang Zhang, Shixun Cao
Summary: The large single crystal Dy0.5Er0.5FeO3 shows spin switching behavior in a wide temperature range, with the occurrence of magnetization drop in field-cooling (FC) mode and magnetization jump in zero-field-cooling (ZFC) mode under low magnetic fields. The spin reorientation transition and spin switching in Dy0.5Er0.5FeO3 single crystal are governed by magnetic interactions between (Dy, Er)-4f and Fe-3d electrons in different sublattices.
APPLIED MATERIALS TODAY
(2021)
Article
Materials Science, Multidisciplinary
Xuanwei Zhao, Xianming Zheng, Xiaohua Luo, Fei Gao, Hai Zeng, Guang Yu, Sajjad Ur Rehman, Changcai Chen, Shengcan Ma, Weijun Ren, Zhenchen Zhong
Summary: The magnetic properties, magnetocaloric effect, and magnetoresistance of ErNi single crystal have been investigated. The single crystal undergoes magnetic transitions at specific temperatures, showing potential for magnetic refrigeration at liquid-helium temperatures. Additionally, complex transport behavior is observed in the crystal.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
P. Corte-Leon, I. Skorvanek, F. Andrejka, V. Zhukova, J. M. Blanco, M. Ipatov, A. Zhukov
Summary: The temperature dependence of hysteresis loops and Giant magnetoimpedance (GMI) effect in amorphous FeSiBC microwires were studied. As-prepared microwires showed an improvement in GMI ratio and a modification in hysteresis loops with increasing temperature. The changes observed were almost completely reversible. In contrast, stress-annealed microwires exhibited a substantial improvement in GMI ratio, but a decrease in GMI effect with increasing temperature. The observed results were discussed in terms of relaxation of internal stresses, Hopkinson effect, and modification of thermal expansion coefficients.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Mohamed Salaheldeen, Asma Wederni, Mihail Ipatov, Valentina Zhukova, Ricardo Lopez Anton, Arcady Zhukov
Summary: Co2FeSi glass-coated microwires with different aspect ratios were studied, showing significant changes in microstructure and magnetic properties. XRD analysis revealed a transition from amorphous to crystalline structure as the aspect ratio increased. By increasing the aspect ratio, the squareness and coercivity of the microwires were notably enhanced. It was found that the microstructure strongly affects the magnetic reversal process, and the thermomagnetic curves showed different levels of irreversibility depending on the aspect ratio. This study demonstrates the ability to control the microstructure and magnetic properties of Co2FeSi glass-coated microwires by adjusting their geometrical properties.
Article
Chemistry, Analytical
Alexander Chizhik, Paula Corte-Leon, Valentina Zhukova, Julian Gonzalez, Przemyslaw Gawronski, Juan Mari Blanco, Arcady Zhukov
Summary: The magnetic properties of a glass-covered amorphous microwire that underwent stress-annealing at different temperatures were investigated using the Sixtus-Tonks, Kerr effect microscopy, and magnetic impedance techniques. The magnetic structure transformed across the zones subjected to annealing at different temperatures. The annealing temperature distribution induced graded magnetic anisotropy in the sample. The analysis of the results was based on calculations of the magnetic structure, assuming the distribution of internal stresses.
Article
Nanoscience & Nanotechnology
P. Corte-Leon, I. Skorvanek, F. Andrejka, V. Zhukova, J. M. Blanco, M. Ipatov, A. Zhukov
Summary: The giant magnetoimpedance (GMI) effect and magnetic properties of as-prepared and stress-annealed amorphous Fe75B9Si12C4 glass-coated microwires produced by the Taylor-Ulitovsky technique are analyzed with temperature influence. Remarkable changes in hysteresis loops and GMI effect are observed upon heating. Tuning the stress-annealing conditions allows for the variation of the temperature dependence. Furthermore, the changes induced by temperature are almost completely reversible.
Article
Nanoscience & Nanotechnology
A. Garcia-Gomez, P. Corte-Leon, M. Ipatov, V. Zhukova, J. Gonzalez, A. Fert, A. Alonso, E. Gomez, A. Zhukov
Summary: This article evaluates the feasibility of using glass coated magnetic microwires as a substitute for optical fiber devices in structural health monitoring in the railway industry. The impact of applied stress on hysteresis loops of Fe71.80B13.27Si11.02Nb2.99Ni0.92 and Co65.34Si12.00B10.20Cr8.48Fe3.90Mo0.08 microwires has been investigated and analyzed. An interpolation function has been derived to relate the coercitivity Hc with the applied stress.
Article
Materials Science, Multidisciplinary
Mohamed Salaheldeen, Mihail Ipatov, Paula Corte-Leon, Valentina Zhukova, Arcady Zhukov
Summary: In this study, we investigated the effect of annealing on the magnetic behavior of Co2MnSi-based Heusler microwires. The annealing temperature was set at 1023 K for 2 hours, and annealing above this temperature would damage the glass coating. Both annealed and as-prepared samples showed strong in-plane magnetocrystalline anisotropy, and the coercivity of the annealed sample was four times higher than that of the as-prepared sample. Interestingly, both samples exhibited stable coercivity behavior with temperature. The annealed sample displayed sharp irreversible magnetic behavior at a blocking temperature of 220 K, while the as-prepared sample had a blocking temperature of 150 K. The unusual and irreversible magnetic behavior was attributed to the internal mechanical stress induced during fabrication and the stress relaxation caused by annealing.
Article
Chemistry, Analytical
Alvaro Gonzalez, Alfonso Garcia-Gomez, Valentina Zhukova, Paula Corte-Leon, Mihail Ipatov, Juan Maria Blanco, Julian Gonzalez, Arcady Zhukov
Summary: This study investigates the effects of conventional annealing and Joule heating on the magnetic domain wall dynamics and giant magnetoimpedance (GMI) effect in Fe-rich microwires with different geometries. The results show that magnetic softness, GMI effect, and domain wall dynamics can be substantially improved by appropriate annealing.
Article
Chemistry, Analytical
Alfonso Garcia-Gomez, Juan Maria Blanco, Paula Corte-Leon, Mihail Ipatov, Alvaro Gonzalez, Julian Gonzalez, Arcady Zhukov, Valentina Zhukova
Summary: This article studies the effect of annealing temperature and applied stress on the magnetic properties of Fe71.80B13.27Si11.02Nb2.99Ni0.92 and Co65.34Si12.00B10.20Cr8.48Fe3.90Mo0.08 microwires. An anomalous behavior of the coercive field is observed while applying stress, indicating nontrivial changes in the microwire magnetic anisotropy. The effect of applied stimuli on the magnetic anisotropy and magnetostriction constant in both microwires is also discussed.
