Article
Chemistry, Physical
Jeotikanta Mohapatra, Xubo Liu, Pramanand Joshi, J. Ping Liu
Summary: Iron (Fe) is an important ferromagnetic element with high magnetic moment and Curie temperature, and it is widely used in technologies and industries. While Fe-based materials are mostly used as soft magnetic materials due to low magneto-crystalline anisotropy (MCA), recent research has shown promising evidence for achieving high MCA in Fe-based hard magnetic materials without rare-earth elements. This paper reviews the history and recent developments of Fe-based hard and semi-hard magnetic materials, focusing on the mechanisms of high MCA and the related crystal and electronic structures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Hiroyuki Yamamoto, Kazuhiro Ueda, Isao Kitagawa
Summary: Through a high-throughput experiment, a novel rare-earth-free hard magnetic phase with excellent magnetic properties was discovered in the Zr-Fe-Si ternary system, which has never been reported before.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
A. M. Gabay, G. C. Hadjipanayis
Summary: ThMn12-type (Sm,Zr)(1)(Fe,Co,Ti)(12) compounds show potential as powerful permanent magnets. The study found that reduction-diffusion temperature plays a significant role in influencing crystallite size, coercivity, and the fraction of monocrystalline particles. Particles synthesized at 1220 degrees C exhibited excellent magnetic properties.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Multidisciplinary
Shulan Zuo, Kaiming Qiao, Ying Zhang, Tongyun Zhao, Chengbao Jiang, Baogen Shen
Summary: In a centrosymmetric rhombohedral Nd2Co17 magnet, spontaneous biskyrmions are observed, which evolve into enclosed in-plane domains with nanometric size due to the enhancement of planar magnetic anisotropy. The generation of biskyrmion lattice and its evolution demonstrate the crucial role of intrinsic bi-anisotropy and demagnetization effects.
Article
Physics, Multidisciplinary
Murli Kumar Manglam, Suman Kumari, Jyotirekha Mallick, Anant Shukla, Manoranjan Kar
Summary: The magnetic behavior of BaFe12O19+(x)CuFe2O4 composites has been investigated. CuFe2O4 was found to contribute the largest magnetic parameters in the composites. The magnetic properties of the composites were optimized by annealing treatment. The exchange coupling between two different magnetic phases in the composites was also studied.
Article
Chemistry, Multidisciplinary
Tula R. Paudel, Bhubnesh Lama, Parashu Kharel
Summary: The study demonstrates the possibility of tuning magnetization and magnetocrystalline anisotropy of MnBi by alloying it with elements like Rh, Pd, Li, and O, which are stable and have larger magnetization energy product compared to MnBi. The potential development of high-energy-density magnets based on MnBi, with other favorable properties such as high Curie temperature and earth abundancy of constituent elements, is envisioned.
Article
Chemistry, Multidisciplinary
Heng-An Zhou, Jiahao Liu, Zidong Wang, Qihan Zhang, Teng Xu, Yiqing Dong, Le Zhao, Soong-Geun Je, Mi-Young Im, Kun Xu, Jing Zhu, Wanjun Jiang
Summary: This report presents a new class of spintronics materials, demonstrating the stabilization of skyrmions and skyrmionium-like spin textures in Pt/SmCo5/Ta and Pt/SmCo5/Ir multilayers through interface engineering. Micromagnetic simulations confirm the presence of chiral spin textures in this new material family, suggesting rare earth permanent magnets as a potential platform for studying interfacial chiral spintronics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Zhe Chen, Kewei Zhang, Qianke Zhu, Qi Guo, Yong Jiang
Summary: The magnetic properties of CoFeB nanowires can be controlled by tuning their microstructure with thermal annealing, leading to changes in coercivity, remanence squareness, and other magnetic characteristics.
Article
Materials Science, Multidisciplinary
Quanzheng Tao, Justinas Palisaitis, Youbing Li, Qing Huang, Per O. A. Persson, Johanna Rosen
Summary: This paper investigates the incorporation of magnetic rare earth elements into the chemically ordered transition metal borides structure. The results show that Mo4/3RE2/3AlB2 materials can potentially be used as a versatile platform for new magnetic materials.
MATERIALS RESEARCH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Chao Liu, Lingyu Liu, Pan Ying
Summary: Two B2CO phases with different hybridizations were predicted, and high pressure technology could be an important method for synthesis. These phases have high hardness and large mechanical modulus.
JOURNAL OF MATERIALS SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Jeotikanta Mohapatra, Meiying Xing, Jacob Elkins, Julian Beatty, J. Ping Liu
Summary: The study found that the design of high coercivity ferromagnetic materials can be achieved by considering factors such as nanowire diameter, alignment, and packing density. Analysis based on experimental results and literature reveals a coercivity ceiling in consideration of geometrical dimensions and effective magnetic anisotropy.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Physics, Condensed Matter
Haq Siraj, Jisang Hong
Summary: This study investigates the temperature-dependent magnetic properties of the Fe5SiC structure. Fe5SiC has a critical temperature of 710K with perpendicular magnetic anisotropy. The magnetic anisotropy constant and coercive field decrease with increasing temperature. Fe5SiC shows better permanent magnetic (PM) property than conventional ferrites and CeCo5, making it a potential candidate for Fe-based gap permanent magnet at room temperature between ferrite and Nd-Fe-B (or Sm-Co).
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Engineering, Chemical
Gloria L. Jimenez, Rohini Thevi Guntnur, Jason Guiliani, Gabriela Romero
Summary: Magnetic hyperthermia, utilizing magnetic nanoparticles to generate local heat under applied alternating magnetic fields, has been studied for cancer treatments. Shape anisotropy and particle hybridization have been explored as possible routes to enhance magnetic hyperthermia efficacy.
Article
Materials Science, Ceramics
M. Alouhmy, R. Moubah, Z. Yamkane, M. Abid, H. Lassri
Summary: The effects of hydrogen implantation on the magnetic properties of amorphous Fe88.4Zr11.6Hx films were studied, showing that the Curie temperature increases and coercivity decreases with increasing hydrogen content. The local random anisotropy constant decreases with higher hydrogen concentration, and the ferromagnetic correlation length increases significantly. The local anisotropy extracted from coercivity fits well with the results obtained using random magnetic anisotropy approach.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
P. Tozman, H. Sepehri-Amin, T. Abe, K. Hono, Y. K. Takahashi
Summary: In this work, the phase equilibrium in the Sm-Fe-V system was investigated to establish an optimal composition range for developing high coercivity SmFe12-based permanent magnets. A new V-rich phase was found in the Sm-Fe-V phase diagram for V contents between 19 and 35 at.% at 1500 K. The experimental confirmation was achieved by analyzing the microstructure of the Sm8Fe72V20 thin film.
Article
Engineering, Electrical & Electronic
Yang Feng, Da Li, Yu Bai, An Hua, Desheng Pan, Yong Li, Yu Wang, Jun He, Zhenhua Wang, Yajing Zhang, Wei Liu, Zhidong Zhang
JOURNAL OF ELECTRONIC MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Haitao Zhou, Desheng Pan, Yong Li, Da Li, C. J. Choi, Zhidong Zhang
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Yong Li, Qifeng Kuang, Xiaoling Men, Shenggang Wang, Da Li, Chuljin Choi, Zhidong Zhang
Summary: A new one-pot microemulsion method was developed to synthesize shape anisotropic α''-Fe16N2@C nanocones at low temperatures, exhibiting high coercivity performance. The anisotropic growth of nanocones was driven by magnetocrystalline anisotropy energy and magnetostatic energy, resulting in a unique fan-like microstructure.
Article
Materials Science, Multidisciplinary
Desheng Pan, Qifeng Kuang, Peng Tong, Wei Tong, Liubing Fan, Jing Zhao, Da Li, Chuljin Choi, Zhidong Zhang
Summary: Challenges still exist in achieving room-temperature ferromagnetism/ferrimagnetism in inorganic-organic hybrid compounds. However, the Fe2.71Se4(dien)(2) hybrid cuboids exhibit impressive room-temperature ferrimagnetic properties, attributed to the high concentration of Fe3+ vacancies inducing large distortions in the FeSe2 chains.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Xiaolei Wang, Guimei Shi, Yinyan Guan, Yajing Zhang, Da Li
Summary: Core-shell Fe3O4@C(N) composites with Fe3O4 core and N-doped C shell were successfully synthesized through dopamine (DA) self-polymerization and heat treatment, showing excellent microwave absorption performance due to effective complementary between magnetic loss and dielectric loss.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Bin Xiao, Chuyang Liu, Desheng Pan, Renchao Hu, Tao Sun, Xinwei Xu, Hong Wang
Summary: The study presents a high-performance millimeter-wave absorbing material based on solid solution with a selective multi-elemental co-doping strategy. The material exhibits high electrical conductivity and broad magnetic loss, leading to superior absorption performance in the frequency range of 18-40 GHz.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Chenyang Yu, Jianqi Huang, Ji Qi, Peng Liu, Da Li, Teng Yang, Zhidong Zhang, Bing Li
Summary: Giant barocaloric effects are observed in formamidinium iodide, which could provide an alternative to vapor-compression refrigeration and has potential applications.
Article
Nanoscience & Nanotechnology
Yi Cao, Yun-Long Tang, Yin-Lian Zhu, Yujia Wang, Nan Liu, Min-Jie Zou, Yan-Peng Feng, Wan-Rong Geng, Changji Li, Da Li, Yong Li, Bo Wu, Jiaqi Liu, Fenghui Gong, Zhidong Zhang, Xiu-Liang Ma
Summary: Perovskite oxide films with unique flexibility and asymmetry are successfully synthesized and demonstrate high ferromagnetic order temperature and stable insulating state.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Xiaolei Shang, Xiaoling Men, Qifeng Kuang, Shaojie Li, Da Li, Zhidong Zhang
Summary: Organic-inorganic hybrid materials have attracted significant attention due to their unique properties. However, organic-inorganic hybrids with excellent permanent magnetic properties are rare. In this study, a new hybrid (Fe2Se3)(2)[Fe(dien)(2)](0.9) was synthesized using a simple chemical method. The hybrid rods exhibited ferrimagnetic behavior with a high coercivity of 4.67 kOe and a saturation magnetization of 13.5 emu/g at 2 K. The excellent magnetic performance was attributed to the monoclinic hybrid structure built by Fe(dien)(2) complexes and Fe2Se3 double chains. This study provides guidance for the development of organic-inorganic hybrid phases with varied crystal structures and magnetic properties.
Article
Materials Science, Multidisciplinary
Bo Zhang, Qifeng Kuang, Hua Pang, Fashen Li, Liyun Tang, Da Li, Zhiwei Li
Summary: In this work, detailed Fe-57 Mossbauer spectroscopy investigations were conducted on the ((Co0.97Fe0.03)-Fe-57)(4)Nb2O9 compound to study its magnetic structure. It was found that previously reported magnetic structures were not able to satisfactorily describe the low temperature Mossbauer spectra obtained. Therefore, a modulated helicoidal magnetic structure was proposed, along with theoretical calculations, to simulate the entire series of low temperature Mossbauer spectra. The results suggest that the combination of previously reported magnetic structures only approximates the average magnetic structure from the modulated helicoidal model. The proposed modulated non-collinear magnetic structure is anticipated to provide insight into the understanding of the complex magnetoelectric effects observed in this system.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Desheng Pan, Bin Xiao, Qing Wang, Hong Wang
Summary: Chemical conversion is used to synthesize advanced nanomaterials with specific characteristics. In this study, a chemical conversion route driven by trioctylphosphine was used to transform lamellar Fe1-xCoxS1.2-DETA inorganic-organic hybrid solid solutions into 2D single-crystal Fe1-xCox alloy with controllable composition and dimensionality. The prepared Fe0.7Co0.3 alloy showed the highest magnetization, demonstrating the versatility of the chemical conversion strategy.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Xiaolei Wang, Qiyao Geng, Guimei Shi, Yajing Zhang, Da Li
Article
Chemistry, Multidisciplinary
Yong Li, Desheng Pan, Yangtao Zhou, Qifeng Kuang, Chinwei Wang, Bing Li, Bingsen Zhang, Jihoon Park, Da Li, Chuljin Choi, Zhidong Zhang