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Antiferromagnetic hexagonal MnTe is a promising material for spintronic devices relying on the control of antiferromagnetic domain orientations. Here we report on neutron diffraction, magnetotransport, and magnetometry experiments on…

Magnetodynamical properties of nanomagnets are affected by the demagnetizing fields created by the same nanoelements. In addition, magnetocrystalline anisotropy produces an effective field that also contributes to the spin dynamics. In this…

介观与纳米尺度物理 · 物理学 2015-09-14 Vegard Flovik , Ferran Macià , Joan Manel Hernàndez , Rimantas Brucas , Maj Hanson , Erik Wahlstrôm

We reveal the assembly of monodisperse magnetite nanoparticles of sizes 5 nm, 15 nm and 25 nm from dilute water-based ferrofluids onto an amorphous magnetic template with out-of-plane anisotropy. From neutron reflectometry experiments we…

The anomalous Nernst effect in nanostructured magnetic materials is a key phenomenon to optimally control and employ the internal energy dissipated in electronic devices, being dependent on for instance the magnetic anisotropy of the active…

Nanoscale objects often behave differently than their 'normal-sized' counterparts. Sometimes it is enough to be small in just one direction to exhibit unusual features. One example of such a phenomenon is a very specific in-plane magnetic…

介观与纳米尺度物理 · 物理学 2012-10-10 Marek W. Gutowski

Magnetocrystalline anisotropy is a fundamental property of magnetic materials that determines the dynamics of magnetic precession, the frequency of spin waves, the thermal stability of magnetic domains, and the efficiency of spintronic…

Although crystallized neutron star crust is responsible for many fascinating observational phenomena, its actual microscopic structure in tremendous gravitational and magnetic fields is not understood. Here we show that in a non-uniform…

高能天体物理现象 · 物理学 2017-07-26 D. A. Baiko , A. A. Kozhberov

High-speed magnetization switching of a nanomagnet is necessary for faster information processing. The ballistic switching by a pulsed magnetic filed is a promising candidate for the high-speed switching. It is known that the switching…

介观与纳米尺度物理 · 物理学 2023-05-18 Toshiki Yamaji , Hiroshi Imamura

Layered {\alpha}-RuCl3 is a promising material to potentially realize the long-sought Kitaev quantum spin liquid with fractionalized excitations. While evidence of this exotic state has been reported under a modest in-plane magnetic field,…

We study a possible mechanism of the switching of the magnetic easy axis as a function of hole concentration in (Ga,Mn)As epilayers. In-plane uniaxial magnetic anisotropy along [110] is found to exceed intrinsic cubic magnetocrystalline…

材料科学 · 物理学 2009-11-11 K. Hamaya , T. Watanabe , T. Taniyama , A. Oiwa , Y. Kitamoto , Y. Yamazaki

We have fabricated Fe(N) thin films with varied N2 partial pressure and studied the microstructure, morphology, magnetic properties and resistivity by using X-ray diffraction, atomic force microscopy, transmission electron microscopy,…

材料科学 · 物理学 2009-11-10 H. B. Nie , S. Y. Xu , C. K. Ong , Q. Zhan , D. X. Li , J. P. Wang

We theoretically investigate magnetic anisotropy in materials with non-critical elements to determine which symmetry conditions and atomic shell filling favor enhanced magnetic anisotropy. We study the magnetocrystalline anisotropies (MCA)…

材料科学 · 物理学 2025-07-08 Nica Jane B. Ferrer , Gregory A. Fiete

Magnetic materials are usually characterized by anisotropy energy barriers which dictate the time scale of the magnetization decay and consequently the magnetic stability of the sample. Here we present a unified description, which includes…

统计力学 · 物理学 2014-03-31 F. Borgonovi , G. L. Celardo

A solution to energy-efficient magnetization switching in a nanoparticle with biaxial anisotropy is presented. Optimal control paths minimizing the energy cost of magnetization reversal are calculated numerically as functions of the…

计算物理 · 物理学 2023-07-12 Mohammad H. A. Badarneh , Grzegorz J. Kwiatkowski , Pavel F. Bessarab

Magnetocrystalline anisotropy in transition metal alloys (FePt, CoPt, FePd, MnAl, MnGa, and FeCo) was studied using first-principles calculations to elucidate its specific mechanism. The tight-binding linear muffin-tin orbital method in the…

材料科学 · 物理学 2014-03-04 Yohei Kota , Akimasa Sakuma

Magnetization of soft-ferromagnetic nano- and microtubes of nanometer-thin walls (a single-widening rolled-up nanomembranes) is theoretically studied using analytical and numerical approaches including different stress-induced anisotropies.…

介观与纳米尺度物理 · 物理学 2016-09-12 Andrzej Janutka

Octahedral distortion plays a key role in engineering the physical properties of heterostructures composed of perovskite oxides. We observe a strong in-plane uniaxial magnetic anisotropy in a strain-enabled multiferroic EuTiO3 thin film…

材料科学 · 物理学 2015-06-17 X. Ke , T. Birol , R. Misra , J. -H. Lee , B. J. Kirby , D. G. Schlom , C. J. Fennie , J. W. Freeland

Within a phenomenological approach the density of induced uniaxial anisotropy in nanostructures K(r) is treated as a physical field additional to the magnetization M(r). The equilibrium distributions of K(r) are formed under the influence…

材料科学 · 物理学 2007-05-23 A. N. Bogdanov , U. K. Roessler

We consider an effect of a strong magnetic field on the ground state and macroscopic coherent tunneling in small antiferromagnetic particles with uniaxial and biaxial single-ion anisotropy. We find several tunneling regimes that depend on…

介观与纳米尺度物理 · 物理学 2009-11-10 B. A. Ivanov , V. E. Kireev

Magneto-plasticity occurs when a weak magnetic field alters material plasticity and offers a viable solution to enhance ductile-mode cutting of brittle materials. This study demonstrates the susceptibility of non-magnetic single-crystal…

材料科学 · 物理学 2021-11-17 Yunfa Guo , Yan Jin Lee , Yu Zhang , Anastassia Sorkin , Sergei Manzhos , Hao Wang