Easy-plane magnetic anisotropy in layered GdMn2Si2 compound with easy-axis magnetocrystalline anisotropy

2020 ◽  
Vol 818 ◽  
pp. 152902
Author(s):  
E.G. Gerasimov ◽  
P.B. Terentev ◽  
A.F. Gubkin ◽  
H.E. Fischer ◽  
D.I. Gorbunov ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Magnetocrystalline Anisotropy ◽  
Easy Plane

Magnetic Anisotropy Switch: Easy Axis to Easy Plane Conversion and Vice Versa

2018 ◽  
Vol 28 (32) ◽  
pp. 1801846 ◽  
Author(s):  
Mauro Perfetti ◽  
Mikkel A. Sørensen ◽  
Ursula B. Hansen ◽  
Heiko Bamberger ◽  
Samuel Lenz ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Easy Plane

scholarly journals Substituent effects on fluoride binding by lanthanide complexes of DOTA-tetraamides

2016 ◽  
Vol 45 (7) ◽  
pp. 3070-3077 ◽  
Author(s):  
Octavia A. Blackburn ◽  
Jack D. Routledge ◽  
Laura B. Jennings ◽  
Nicholas H. Rees ◽  
Alan M. Kenwright ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Lanthanide Complexes ◽  
Easy Axis ◽  
Substituent Effects ◽  
Easy Plane ◽  
Metal Centre

Fluoride binding by lanthanide complexes of a range of DOTA tetraamides changes the magnetic anisotropy at the metal centre from an easy axis to an easy plane.

Magnetic Properties and Crystal Structure of (Fe,Ni)2( P,Si) Quaternaries of Fe2P-Type

2020 ◽  
Vol 1001 ◽  
pp. 53-60
Author(s):  
Tian Yi Ren ◽  
Rui Hong Wang ◽  
Tian Liang Wang
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Permanent Magnet ◽  
Room Temperature ◽  
Easy Axis ◽  
Magnetocrystalline Anisotropy ◽  
Hexagonal Structure ◽  
Crystal Axis ◽  
P Type ◽  
The Magnetic Field

(Fe,Ni)2(P,Si) compounds were synthesized and characterized. Ni substitution in Fe1.95-xNixP0.7Si0.3 is found to favor the formation of Fe2P-type hexagonal structure. The samples appear nearly single phase. Powder oriented in the magnetic field shows a pronounced uniaxial magnetic anisotropy with c axis as the easy axis. Magnetization measurements carried out along and perpendicular to the c crystal axis demonstrate a significant magnetic anisotropy, making these materials potential candidates for permanent magnet applications. We found that (Fe,Ni)2(P,Si) compound has no remanent magnetic field and coercivity, but it has a large magnetocrystalline anisotropy at room temperature. Therefore, doping Fe2P type compounds with a small amount of Ni and Si may be a promising way to create new materials with large magnetocrystalline anisotropy at room temperature, and thus rare-earth free permanent magnet.

Beyond the anisotropy barrier: slow relaxation of the magnetization in both easy-axis and easy-plane Ln(trensal) complexes

2014 ◽  
Vol 50 (14) ◽  
pp. 1648-1651 ◽  
Author(s):  
Eva Lucaccini ◽  
Lorenzo Sorace ◽  
Mauro Perfetti ◽  
Jean-Pierre Costes ◽  
Roberta Sessoli
Keyword(s):  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Easy Plane ◽  
Slow Relaxation

The slow relaxation of the magnetization of lanthanide SMMs cannot be directly associated with the nature of magnetic anisotropy.

Spin-Reorientation Transition in Rare-Earth Intermetallics

2010 ◽  
Vol 168-169 ◽  
pp. 138-141
Author(s):  
A.N. Pirogov ◽  
S.G. Bogdanov ◽  
Young Hyun Choi ◽  
E.V. Rozenfeld ◽  
Yong Choi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Neutron Diffraction ◽  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Easy Plane ◽  
Spin Reorientation ◽  
Rare Earth Intermetallics ◽  
Spin Reorientation Transition ◽  
Powder Neutron Diffraction ◽  
Increasing Temperature

The Tm2Fe17 compound has been studied by means of powder neutron diffraction. The compound undergoes a spin-reorientation transition (SRT) of the “easy axis – easy plane” type with increasing temperature from 75 K to 100 K. The SRT is accompanied by a distinct anomaly in the temperature dependencies of the Tm- and Fe-ion magnetizations, significative of large magnetization anisotropy. Using three sublattices model, the parameter of the Tm-Fe interaction and constants of magnetic anisotropy are determined.

Magnetic Anisotropy of Epitaxial Co/Pt Superlattices

1991 ◽  
Vol 231 ◽  
Author(s):  
C.J. Chien ◽  
B.M. Clemens ◽  
S.B. Hagstrom ◽  
R.F.C. Farrow ◽  
C.H. Lee ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Magnetocrystalline Anisotropy ◽  
Structural Data ◽  
Magnetic Surface ◽  
Surface Anisotropy ◽  
Cross Sectional ◽  
Planar Defects ◽  
Gaas Substrates ◽  
Transmission Electron

AbstractSelected orientations of epitaxial Co/Pt superlattices were grown on GaAs substrates in [001], [110], and [111] orientations using seeded epitaxy techniques. The microstructural and magnetic properties of Co/Pt superlattices are presented. The magnetic anisotropies of Co/Pt superlattices are found strongly dependent on the crystallographic orientation of the growth axis. High-resolution cross-sectional transmission electron microscopy (HRXTEM) investigation of the Co/Pt interfaces has revealed the presence of a large number of planar defects in the [111] Co/Pt superlattice. HRXTEM shows that the interface of Co/Pt is wavy and is not atomically abrupt. These findings suggest that models for the magnetic anisotropy should not be based on idealized, chemically abrupt interfaces but should incorporate magnetocrystalline anisotropy in the alloy region. We propose a model for the magnetic anisotropy based on the N6el magnetic surface anisotropy and the existence of defects in the alloy region. The easy axis of the magnetic anisotropy predicted by the model agrees with the magnetic and structural data for the superlattices.

Magnetic Anisotropy in Electrodeposited CO Films and spin-valves on Gaas Substrates

1999 ◽  
Vol 562 ◽  
Author(s):  
K. Attenborough ◽  
M. Cerisier ◽  
H. Boeve ◽  
J. De Boeck ◽  
G. Borghs ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Buffer Layer ◽  
Structural Properties ◽  
Easy Axis ◽  
Spin Valve ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cu Films ◽  
Gaas Substrates ◽  
Unique Spin

ABSTRACTWe have studied the magnetic and structural properties of thin electrodeposited Co and Cu layers grown directly onto (100) n-GaAs and have investigated the influence of a buffer layer. A dominant fourfold anisotropy with a uniaxial contribution is observed in 10 nm Co electrodeposited films on GaAs. An easy axis is observed in the [001] GaAs direction with two hard axes of differing coercivities parallel to the [011] and [011] directions. For thicker films the easy axes in the [001] direction becomes less pronounced and the fourfold anisotropy becomes less dominant. Co films of similar thicknesses deposited onto an electrodeposited Cu buffer layer were nearly isotropic. From X-ray diffraction 21 nm Co layers on GaAs were found to be hcp with the c-axis tending to be in the plane of the film. The anisotropy is ascribed to the Co/GaAs interface and is held responsible for the unique spin-valve properties seen recently in electrodeposited Co/Cu films.

scholarly journals Strain-induced perpendicular magnetic anisotropy and Gilbert damping of Tm3Fe5O12 thin films

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Oana Ciubotariu ◽  
Anna Semisalova ◽  
Kilian Lenz ◽  
Manfred Albrecht
Keyword(s):  
Film Thickness ◽  
Magnetic Anisotropy ◽  
Tensile Strain ◽  
Easy Axis ◽  
Perpendicular Magnetic Anisotropy ◽  
Gilbert Damping ◽  
Sample Plane ◽  
Iron Garnets ◽  
Out Of Plane ◽  
Magnetic Easy Axis

AbstractIn the attempt of implementing iron garnets with perpendicular magnetic anisotropy (PMA) in spintronics, the attention turned towards strain-grown iron garnets. One candidate is Tm3Fe5O12 (TmIG) which possesses an out-of-plane magnetic easy axis when grown under tensile strain. In this study, the effect of film thickness on the structural and magnetic properties of TmIG films including magnetic anisotropy, saturation magnetization, and Gilbert damping is investigated. TmIG films with thicknesses between 20 and 300 nm are epitaxially grown by pulsed laser deposition on substituted-Gd3Ga5O12(111) substrates. Structural characterization shows that films thinner than 200 nm show in-plane tensile strain, thus exhibiting PMA due to strain-induced magnetoelastic anisotropy. However, with increasing film thickness a relaxation of the unit cell is observed resulting in the rotation of the magnetic easy axis towards the sample plane due to the dominant shape anisotropy. Furthermore, the Gilbert damping parameter is found to be in the range of 0.02 ± 0.005.

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