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We consider a model of a thin film elastically attached to a rigid substrate. In the case in which the film expands relative to the substrate and assuming certain non-linear elastic behavior of the film, expansion ridges may appear, in…

统计力学 · 物理学 2009-11-11 E. A. Jagla

We study from tempered Monte Carlo simulations the magnetic phase diagram of a textured dipolar Ising model on a face centered cubic lattice. The Ising coupling of the model follow the dipole-dipole interaction. The Ising axes are…

统计力学 · 物理学 2020-01-09 V. Russier , J. -J. Alonso

The magnetoimpedance effect is a versatile tool to investigate ferromagnetic materials, revealing aspects on the fundamental physics associated to magnetization dynamics, broadband magnetic properties, important issues for current and…

材料科学 · 物理学 2015-06-23 M. A. Corrêa , F. Bohn , R. B. da Silva , R. L. Sommer

Magnetic skyrmions are topological objects, which have recently been observed in thin films at room temperature. Sub 100-nm sizes and spin polarised current manipulation make them candidates for high density information storage and…

介观与纳米尺度物理 · 物理学 2021-07-05 Laurent Ranno , Maria Alfonso Moro

We present an analysis of edge domain walls in exchange-biased ferromagnetic films appearing as a result of a competition between the stray field at the film edges and the exchange bias field in the bulk. We introduce an effective…

偏微分方程分析 · 数学 2018-10-05 Ross G. Lund , Cyrill B. Muratov , Valeriy V. Slastikov

We report that the finite thickness of three-dimensional topological insulator (TI) thin films produces an observable magnetoresistance (MR) in phase coherent transport in parallel magnetic fields. The MR data of Bi2Se3 and (Bi,Sb)2Te3 thin…

介观与纳米尺度物理 · 物理学 2013-07-30 C. J. Lin , X. Y. He , J. Liao , X. X. Wang , V. Sacksteder , W. M. Yang , T. Guan , Q. M. Zhang , L. Gu , G. Y. Zhang , C. G. Zeng , X. Dai , K. H. Wu , Y. Q. Li

It is shown that for thin metal films, thickness of which does not exceed a thickness of a skin-layer, the problem allows analytical solution for any boundary conditions. The analysis of transmission, reflection and absorption of an…

数学物理 · 物理学 2010-10-12 A. V. Latyshev , A. A. Yushkanov

Thin superconducting films are usually regarded as type II superconductors even when they are made of a type I material. The reason is a strong contribution of the stray magnetic field that stabilizes vortices. While very thin films indeed…

The ability of amorphous intergranular films to mitigate damage formation at grain boundaries is studied with molecular dynamics simulations. We find that such films can alter both crack nucleation and crack growth rates by efficiently…

材料科学 · 物理学 2015-01-22 Zhiliang Pan , Timothy J. Rupert

A model is introduced for the theoretical description of nanoscale magnetic films with high perpendicular anisotropy. In the model the magnetic film is described in terms of single domain magnetic grains, interacting via exchange as well as…

凝聚态物理 · 物理学 2009-10-28 U. Nowak

The growth of confined magnetic films with ferromagnetic interactions between nearest-neighbor spins is studied in a stripped $(1+1)-$dimensional rectangular geometry. Magnetic films are grown irreversibly by adding spins at the boundaries…

统计力学 · 物理学 2007-05-23 Julián Candia , Ezequiel V. Albano

The large curvature effects on micromagnetic energy of a thin ferromagnetic film with nonlocal dipolar energy are considered. We predict that the dipolar interaction and surface curvature can produce perpendicular anisotropy which can be…

介观与纳米尺度物理 · 物理学 2017-08-21 Oleg A. Tretiakov , Massimiliano Morini , Sergiy Vasylkevych , Valeriy Slastikov

The competition between shape and perpendicular magnetic anisotropies (PMA) in magnetic thin films gives rise to unusual magnetic behaviors. In ferromagnetic films with moderate PMA the magnetic domain configuration transitions from planar…

Far-infrared and terahertz spectroscopy of ferroelectric soft and central modes in thin films on substrates is reviewed. In addition to classical displacive proper ferroelectrics, also incipient and relaxor ferroelectrics and multiferroics…

材料科学 · 物理学 2016-11-17 Jan Petzelt , Stanislav Kamba

The resonant eigenmodes of a nitrogen-implanted iron {\alpha}'-FeN characterized by weak stripe domains are investigated by Brillouin light scattering and broadband ferromagnetic resonance experiments, assisted by micromagnetic simulations.…

介观与纳米尺度物理 · 物理学 2017-08-15 S. Camara , S. Tacchi , L. -C. Garnier , M. Eddrief , F. Fortuna , G. Carlotti , M. Marangolo

Micropillar compression experiments probing size effects in confined plasticity of metal thin films, including the indirect imposition of 'canonical' simple shearing boundary conditions, show dramatically different responses in compression…

材料科学 · 物理学 2023-05-09 Abhishek Arora , Rajat Arora , Amit Acharya

We study the interaction effects on thin films of topological mirror Kondo insulators (TMKI), where the strong interaction is expected to play an important role. Our study has led to the following results: (1) We identify a rich phase…

强关联电子 · 物理学 2016-12-21 Rui-Xing Zhang , Cenke Xu , Chao-Xing Liu

Based on a modified Ising model in a transverse field we demonstrate that defect layers in ferroelectric thin films, such as layers with impurities, vacancies or dislocations, are able to induce a strong increase or decrease of the…

材料科学 · 物理学 2015-06-24 J. M. Wesselinowa , S. Trimper , K. Zabrocki

The ferromagnetism of a thin GaMnAs layer with a perpendicular easy anisotropy axis is investigated by means of several techniques, that yield a consistent set of data on the magnetic properties and the domain structure of this diluted…

The ability to make controlled patterns of magnetic structures within a nonmagnetic background is essential for several types of existing and proposed technologies. Such patterns provide the foundation of magnetic memory and logic devices,…