scholarly journals Evidence of anomalous switching of the in-plane magnetic easy axis with temperature in Fe3O4 film on SrTiO3:Nb by v-MOKE and ferromagnetic resonance

Nanoscale ◽  
2019 ◽  
Vol 11 (42) ◽  
pp. 19870-19876
Author(s):  
José Luis Fdez. Cuñado ◽  
Julio Camarero ◽  
Francisco J. Pedrosa ◽  
Norbert M. Nemes ◽  
Mikel Sanz ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Ferromagnetic Resonance ◽  
Easy Axis ◽  
Verwey Transition ◽  
Ir Laser ◽  
Magnetic Easy Axis

The in-plane magnetic easy axis of Fe3O4 film grown on SrTiO3:Nb substrate by PLD (nanosecond IR laser) switches with temperature from 〈100〉 (above Verwey transition temperature, TV) to 〈110〉 (T < TV) directions.

Magnetostriction of First and Second Order Magnetite Samples and its Relation to the Magnetic Easy Axis Switching

2012 ◽  
Vol 194 ◽  
pp. 120-123 ◽  
Author(s):  
Akyana Britwum ◽  
Tomasz Kolodziej ◽  
Waldemar Tokarz ◽  
Janusz Przewoźnik ◽  
Czesław Kapusta ◽  
...  
Keyword(s):  
Easy Axis ◽  
Large Change ◽  
Field Application ◽  
Second Order ◽  
Transition Regime ◽  
Magnetization Process ◽  
Verwey Transition ◽  
Magnetic Easy Axis ◽  
Axis Switching ◽  
Strong Expansion

Magnetic field (up to 8T) and temperature (10-300K) dependence of size of Zn doped magnetite samples Fe3-xZnxO4(x=0.008, 0.022, i.e. falling within first and second order Verwey transition regime) were measured by the strain gauge method. Both samples experienced shrinking on cooling through the Verwey transition along monoclinic c axis, while the strong expansion was found for the 1storder sample in the a-b direction, unlike in the 2ndorder sample. Magnetostriction of both samples is very small and limited to low fields only, concomitant with magnetization process. However, field application perpendicular to c axis and at T slightly below the Verwey transition temperature TV results in a large change of dimensions, coinciding with the axis switching process.

Expansion and Collapse of Domains With Reverse Magnetization in (Ga,Mn)As Epilayers With Perpendicular Magnetic Easy Axis

2007 ◽  
Vol 43 (6) ◽  
pp. 3022-3024 ◽  
Author(s):  
A. Dourlat ◽  
C. Gourdon ◽  
V. Jeudy ◽  
C. Testelin ◽  
K. Khazen ◽  
...  
Keyword(s):  
Easy Axis ◽  
Magnetic Easy Axis ◽  
Reverse Magnetization

scholarly journals Influence of the electrodeposition potential on the crystallographic structure and effective magnetic easy axis of cobalt nanowires

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 14266-14272 ◽  
Author(s):  
M. I. Irshad ◽  
N. M. Mohamed ◽  
M. Z. Abdullah ◽  
M. S. M. Saheed ◽  
A. Mumtaz ◽  
...  
Keyword(s):  
Easy Axis ◽  
Aluminium Oxide ◽  
Deposition Potential ◽  
Crystallographic Structure ◽  
Cobalt Nanowires ◽  
Magnetic Easy Axis

Cobalt nanowires (NWs) have been synthesized by electrodeposition inside the pores of anodized aluminium oxide templates, at different values of applied deposition potential.

Electrical Conductivity of Magnetite below the Verwey Transition Temperature

1984 ◽  
Vol 122 (2) ◽  
pp. K187-K190 ◽  
Author(s):  
Young Hwan Choi ◽  
Youn Soo Lim ◽  
Chul Koo Kim ◽  
Kyun Nahm
Keyword(s):  
Electrical Conductivity ◽  
Transition Temperature ◽  
Verwey Transition

Fabrication of L10-PdCoFe nanocrystalline particles with tilted magnetic easy axis

2007 ◽  
Vol 91 (19) ◽  
pp. 193106 ◽  
Author(s):  
András Kovács ◽  
Yoshihiko Hirotsu
Keyword(s):  
Easy Axis ◽  
Nanocrystalline Particles ◽  
Magnetic Easy Axis

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.

scholarly journals Pressure Effects on the Magnetic Phase Diagram of the CeNMSb2 (NM: Au and Ag): A DFT Study

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2237
Author(s):  
Mowafaq Mohammad Alsardia ◽  
Jaekyung Jang ◽  
Joo Yull Rhee
Keyword(s):  
Ground State ◽  
Noble Metals ◽  
Easy Axis ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Pressure Effects ◽  
Spin Orbit ◽  
Magnetic Ground State ◽  
Magnetic Easy Axis ◽  
Spin Orbit Interactions

We explore the influence of pressure on the magnetic ground state of the heavy-fermion antiferromagnet (ferromagnet) CeAuSb 2 (CeAgSb 2 ) using first-principles calculations. The total-energy differences obtained by including the spin-orbit interactions and the on-site Coulomb potential for the Ce-derived 4f-orbitals are necessary to realize the accurate magnetic ground state of CeNMSb 2 (NM: Au and Ag). According to our results, the appearance of a new magnetic phase of CeAuSb 2 (CeAgSb 2 ) at the pressure of 2.1 GPa (3.5 GPa) is due to the rotation of the magnetic easy axis from the <001> to the <100> direction. Additionally, our data confirm that CeAgSb 2 is antiferromagnetic (AFM) above a critical pressure P c , and such a tendency is expected for CeAuSb 2 and remains to be seen. Through the spin-orbit-coupling Hamiltonian and detailed information on the occupation of individual 4f-orbitals of the Ce atom obtained by the electronic-structure calculations, we can deduce the rotation of the magnetic easy axis upon the application of pressure. According to the present and previous studies, the differences among the magnetic properties of CeNMSb 2 (NM: Cu, Ag and Au) compounds are not due to the different noble metals, but due to the subtle differences in the relative position of Ce atoms and, in turn, different occupations of Ce 4f-orbitals.

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