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A spin model of LiCu2O2 compound with ground state of ellipsoidal helical structure has been adopted. Taking into account the interchain coupling and exchange anisotropy, we focus on the magnetoelectric properties in a rotating magnetic…

Materials Science · Physics 2015-06-18 Yan Qi , An Du

Magnetic lateral multilayers have been fabricated on weak perpendicular magnetic anisotropy amorphous Nd-Co films in order to perform a systematic study on the conditions for controlled nucleation of topological defects within their…

Mesoscale and Nanoscale Physics · Physics 2013-11-21 A. Hierro-Rodriguez , M. Velez , R. Morales , N. Soriano , G. Rodriguez-Rodriguez , L. M. Alvarez-Prado , J. I. Martin , J. M. Alameda

The influence of magnetic anisotropy on nanosecond magnetization reversal in coupled FeNi/Cu/Co trilayers was studied using a photoelectron emission microscope combined with x-ray magnetic circular dicroism. In quasi-isotropic samples the…

This chapter takes a microscopic view of quantum tunneling of magnetization (QTM) in single-molecule magnets (SMMs), focusing on the interplay between exchange and anisotropy. Careful consideration is given to the relationship between…

Mesoscale and Nanoscale Physics · Physics 2013-03-04 Junjie Liu , Enrique del Barco , Stephen Hill

The two-dimensional (2D) Cu(CrSe$_2$)$_2$ monolayer stands out for its combined ferromagnetic (FM), ferroelectric (FE), and metallic properties, marking itself as a prominent 2D multiferroic metal. This work studies those properties and the…

Materials Science · Physics 2025-03-03 Ke Yang , Yuxuan Zhou , Yaozhenghang Ma , Hua Wu

An alternate method of measuring anisotropy fields in thin film ferromagnets is demonstrated. The method relies on the magnetic susceptibility in a small a.c. magnetic field, measured \txtit{in situ} using the magneto-optic Kerr effect…

Materials Science · Physics 2019-04-17 A. Bartlett , R. Belanger , M. Amman , D. Venus

A topological modulation of magnetic thin films can induce a magnetic anisotropy of magnetostatic origin. In this letter, we report on the magnetic properties of NiFe layers deposited on wavy shaped Si substrates. Without any modulation,…

Materials Science · Physics 2009-01-20 J. Briones , F. Montaigne , G. Lengaigne , D. Lacour , M. Hehn

Several recent experimental studies have confirmed the possibility of switching the magnetization direction in the small magnetic domains by pumping large spin-polarized currents through them. On the basis of equations proposed by…

Condensed Matter · Physics 2009-10-31 Ya. B. Bazaliy , B. A. Jones , Shou-Cheng Zhang

We investigate single CoFeB nanotubes with hexagonal cross-section using dynamic cantilever magnetometry (DCM). We develop both an analytical model based on the Stoner-Wohlfarth approximation and a broadly applicable numerical framework for…

Mesoscale and Nanoscale Physics · Physics 2016-02-09 B. Gross , D. P. Weber , D. Rüffer , A. Buchter , F. Heimbach , A. Fontcuberta i Morral , D. Grundler , M. Poggio

The magnetization characteristic in a permalloy thin strip is investigated by electrically measuring the anisotropic magnetoresistance and ferromagnetic resonance in in-plane and out-of-plane configurations. Our results indicate that the…

Materials Science · Physics 2014-03-05 Ziqian Wang , Guolin Yu , Xinzhi Liu , Bo Zhang , Xiaoshuang Chen , Wei Lu

Through magnetic linear dichroism spectroscopy, the magnetic susceptibility anisotropy of metallic single-walled carbon nanotubes has been extracted and found to be 2-4 times greater than values for semiconducting single-walled carbon…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 T. A. Searles , Y. Imanaka , T. Takamasu , H. Ajiki , J. A. Fagan , E. K. Hobbie , J. Kono

Perpendicular magnetic anisotropy (PMA) and dynamic magnetization reversal process in [CoFeB $t$ nm/Pd 1.0 nm]$_n$ ($t$ = 0.4, 0.6, 0.8, 1.0, and 1.2 nm; $n$ = 2 - 20) multilayer films have been studied by means of magnetic hysteresis and…

Mesoscale and Nanoscale Physics · Physics 2014-10-14 Duc-The Ngo , Duy-Truong Quach , Quang-Hung Tran , Kristian Mølhave , The-Long Phan , Dong-Hyun Kim

In this work, we explored theoretically the spatial resolution of magnetic solitons and the variations of their sizes when subjected to a Magnetic Force Microscopy (MFM) measurement. Next to tip-sample separation, we considered reversal in…

Mesoscale and Nanoscale Physics · Physics 2024-06-07 I. Castro , A. Riveros , J. L. Palma , L. Abelmann , R. Tomasello , D. R. Rodrigues , A. Giordano , G. Finocchio , R. Gallardo , N. Vidal-Silva

We report the local measurements of the magnetic penetration depth $\lambda$ in a superconducting Nb film using magnetic force microscopy (MFM). We developed a method for quantitative extraction of the penetration depth from…

Materials Science · Physics 2009-12-29 E. Nazaretski , J. P. Thibodaux , I. Vekhter , L. Civale , J. D. Thompson , R. Movshovich

The desired result of magnetic anisotropy investigations is the determination of value(s) of various anisotropy constant(s). This is sometimes difficult, especially when the precise knowledge of saturation magnetization is required, as it…

Classical Physics · Physics 2013-12-30 Marek W. Gutowski

Various methods of force measurement with the Atomic Force Microscope (AFM) are compared for their ability to accurately determine the tip-surface force from analysis of the nonlinear cantilever motion. It is explained how intermodulation,…

Mesoscale and Nanoscale Physics · Physics 2013-03-12 Daniel Platz , Daniel Forchheimer , Erik A. Tholén , David B. Haviland

We present a theoretical survey of magnetocrystalline anisotropies in (Ga,Mn)As epilayers and compare the calculations to available experimental data. Our model is based on an envelope function description of the valence band holes and a…

Materials Science · Physics 2015-05-13 J. Zemen , J. Kucera , K. Olejnik , T. Jungwirth

We exploit magnetostriction in polydisperse ferrofluids in order to generate nonlinear responses, and apply a thermodynamical method to derive the desired nonlinear magnetic susceptibility. For an ideal gas, this method has been…

Soft Condensed Matter · Physics 2009-11-10 J. P. Huang , C. Holm

We report a method to locally measure the penetration depth $\lambda$ in a superconductor by detecting the diamagnetic response using magnetic force microscopy (MFM). We extract $\lambda$ by fitting the height dependence of the levitation…

We calculate the magnetization hysteresis for an ordered array of composite magnetic nanoparticles with a ferromagnetic (FM) core and an antiferromagnetic (AFM) shell, located on a triangular lattice and coupled via magnetostatic forces.…

Materials Science · Physics 2007-07-25 D. Kechrakos , K. N. Trohidou , M. Vasilakaki