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Continuous miniaturization of magnetic units in spintronics and quantum computing devices inspires efforts to search for magnetic nanostructures with large magnetic anisotropy energy (MAE). Typical nanostructures including molecular…

Materials Science · Physics 2014-04-15 Jun Hu , Ruqian Wu

Search for single-molecule magnets with large magnetic anisotropy energy (MAE) is essential for the development of molecular spintronics devices used at room temperature. Through systematic first-principles calculations, we found that an…

Mesoscale and Nanoscale Physics · Physics 2018-04-19 Jiaxing Qu , Jun Hu

Dimers are the smallest chemical objects that show magnetic anisotropy. We focus on 3$d$ and 4$d$ transition metal dimers that have magnetic ground states in most cases. Some of these magnetic dimers have a considerable barrier against…

Atomic and Molecular Clusters · Physics 2008-04-09 Daniel Fritsch , Klaus Koepernik , Manuel Richter , Helmut Eschrig

Nano-structures with giant magnetocrystalline anisotropy energies (MAE) are desired in designing miniaturized magnetic storage and quantum computing devices. Through ab initio and model calculations, we propose that special p-element dimers…

Materials Science · Physics 2016-12-28 Rui Pang , Bei Deng , Xingqiang Shi

Large magnetic anisotropy energy (MAE) is desirable and critical for nanoscale magnetic devices. Here, using ligand-field level diagrams and density functional calculations, we well explain the very recent discovery [I. G. Rau et al.,…

Materials Science · Physics 2015-12-21 Xuedong Ou , Hongbo Wang , Fengren Fan , Zhengwei Li , Hua Wu

Room-temperature superparamagnetism due to a large magnetic anisotropy energy (MAE) of a single atom magnet has always been a prerequisite for nanoscale magnetic devices. Realization of two dimensional (2D) materials such as single-layer…

Mesoscale and Nanoscale Physics · Physics 2018-04-18 M. A. Khan , Michael N. Leuenberger

It is shown that in external magnetic fields, a uniaxial magnetic anisotropy comes into being in a magnetoactive elastomer (MAE). The magnitude of the induced uniaxial anisotropy grows with the increasing external magnetic field. The filler…

In 5d transition metal oxides, novel properties arise from the interplay of electron correlations and spin--orbit interactions. Na4IrO4, where 5d transition-metal Ir atom occupies the center of the square-planar coordination environment, is…

Materials Science · Physics 2017-12-01 Di Wang , Feng Tang , Yongping Du , Xiangang Wan

In the quest for two-dimensional conducting materials with high ferromagnetic ordering temperature the new family of the layered Fe$_{n}$GeTe$_{2}$ compounds, especially the near-room-temperature ferromagnet Fe$_{4}$GeTe$_{2}$, receives a…

Atomic-scale magnetic nanostructures are promising candidates for future information processing devices. Utilizing external electric field to manipulate their magnetic properties is an especially thrilling project. Here, by careful…

Materials Science · Physics 2015-08-18 Wanjiao Zhu , Hang-Chen Ding , Wen-Yi Tong , Shi-Jing Gong , Xiangang Wan , Chun-Gang Duan

Based on numerically accurate density functional theory (DFT) calculations, we systematically investigate the ground-state structure and the spin and orbital magnetism including the magnetic anisotropy energy (MAE) of 3d- and…

Mesoscale and Nanoscale Physics · Physics 2010-09-03 Ruijuan Xiao , Daniel Fritsch , Michael D. Kuz'min , Klaus Koepernik , Manuel Richter , Knut Vietze , Gotthard Seifert

In two-dimensional (2D) magnetic systems, large magnetic anisotropy is needed to stabilize the magnetic order according to Mermin-Wagner theorem. Based on density functional theory (DFT) calculations, we propose that the magnetic…

Materials Science · Physics 2020-11-04 Xuejuan-Dong , Jingyang-You , Zheng Zhang , Bo Gu , Gang Su

Large perpendicular magnetic anisotropy (MA) is highly desirable for realizing atomic-scale magnetic data storage which represents the ultimate limit of the density of magnetic recording. In this work, we studied the MA of transition metal…

Materials Science · Physics 2022-10-05 Wen Qiao , Deyou Jin , Wenbo Mi , Dunhui Wang , Shiming Yan , Xiaoyong Xu , Tiejun Zhou

Electronic structure calculations are used to examine the magnetic properties of Fe$_2$P-based alloys and the mechanisms through which the Curie temperature and magnetocrystalline anisotropy can be optimized for specific applications. It is…

Materials Science · Physics 2017-10-18 I. A. Zhuravlev , V. P. Antropov , A. Vishina , M. van Schilfgaarde , K. D. Belashchenko

In recent years, intrinsic two-dimensional (2D) magnetism aroused great interest because of its potential application in spintronic devices. However, low Curie temperature (\emph{T}$_c$) and magnetic anisotropy energy (MAE) limit its…

Materials Science · Physics 2021-10-01 Tengfei Hu , Wenhui Wan , Yingmei Li , Yanfeng Ge , Yong Liu

We report on the magnetic and hyperthermia properties of iron nanoparticles synthesized by organometallic chemistry. They are 5.5 nm in diameter and display a saturation magnetization close to the bulk one. Magnetic properties are dominated…

Materials Science · Physics 2015-05-14 B. Mehdaoui , A. Meffre , L. -M. Lacroix , J. Carrey , S. Lachaize , M. Respaud , M. Gougeon , B. Chaudret

Designing systems with large magnetic anisotropy energy (MAE) is desirable and critical for nanoscale magnetic devices. A recent breakthrough achieved the theoretical limit of the MAE for 3$d$ transition metal atoms by placing a single Co…

Mesoscale and Nanoscale Physics · Physics 2024-12-10 Sufyan Shehada , Manuel dos Santos Dias , Muayad Abusaa , Samir Lounis

The Fe$_5$PB$_2$ compound offers tunable magnetic properties via the possibility of various combinations of substitutions on the Fe and P-sites. Here, we present a combined computational and experimental study of the magnetic properties of…

Antiferromagnetic spintronics is an emerging field; antiferromagnets can improve the functionalities of ferromagnets with higher response times, and having the information shielded against external magnetic field. Moreover, a large list of…

We present a first-principles study of the large magneto-crystalline anisotropy in the intercalated di-chalcogenide material \ce{Fe_{0.25}TaS_2}, investigated with the DFT+U approach. We verify a uniaxial magnetocrystalline anisotropy…

Strongly Correlated Electrons · Physics 2016-05-24 Vaideesh Loganathan , Jian-Xin Zhu , Andriy H. Nevidomskyy
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