Intrinsic surface magnetic anisotropy in Y3Fe5O12 as the origin of low-magnetic-field behavior of the spin Seebeck effect

2015 ◽  
Vol 92 (1) ◽  
Author(s):  
Ken-ichi Uchida ◽  
Jun-ichiro Ohe ◽  
Takashi Kikkawa ◽  
Shunsuke Daimon ◽  
Dazhi Hou ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Seebeck Effect ◽  
Spin Seebeck Effect ◽  
Field Behavior ◽  
Surface Magnetic Anisotropy ◽  
Low Magnetic Field

Extrinsic Surface Magnetic Anisotropy Contribution in Pt/Y3Fe5O12 Interface in Longitudinal Spin Seebeck Effect by Graphene Interlayer

2021 ◽  
Vol 13 (37) ◽  
pp. 45097-45104
Author(s):  
Won-Yong Lee ◽  
No-Won Park ◽  
Min-Sung Kang ◽  
Gil-Sung Kim ◽  
Young-Gui Yoon ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Seebeck Effect ◽  
Spin Seebeck Effect ◽  
Longitudinal Spin ◽  
Surface Magnetic Anisotropy

scholarly journals Publisher's Note: Magnetic field control of the spin Seebeck effect [Phys. Rev. B92, 174411 (2015)]

2016 ◽  
Vol 93 (1) ◽  
Author(s):  
Ulrike Ritzmann ◽  
Denise Hinzke ◽  
Andreas Kehlberger ◽  
Er-Jia Guo ◽  
Mathias Kläui ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Seebeck Effect ◽  
Spin Seebeck Effect ◽  
Field Control

Spin Seebeck effect in antiferromagnet nickel oxide in wide ranges of temperature and magnetic field

2019 ◽  
Vol 99 (9) ◽  
Author(s):  
P. R. T. Ribeiro ◽  
F. L. A. Machado ◽  
M. Gamino ◽  
A. Azevedo ◽  
S. M. Rezende
Keyword(s):  
Magnetic Field ◽  
Nickel Oxide ◽  
Seebeck Effect ◽  
Spin Seebeck Effect

scholarly journals Vectorial observation of the spin Seebeck effect in epitaxial NiFe2O4 thin films with various magnetic anisotropy contributions

2019 ◽  
Vol 114 (23) ◽  
pp. 232404 ◽  
Author(s):  
Zhong Li ◽  
Jan Krieft ◽  
Amit Vikram Singh ◽  
Sudhir Regmi ◽  
Ankur Rastogi ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Seebeck Effect ◽  
Spin Seebeck Effect

Magnetostriction and Hysteresis of (Tb,Dy,Ho)Fe2 Alloys

2007 ◽  
Vol 546-549 ◽  
pp. 2205-2208 ◽  
Author(s):  
Hong Bo Zhang ◽  
Cheng Bao Jiang
Keyword(s):  
Magnetic Field ◽  
Curie Temperature ◽  
Magnetic Anisotropy ◽  
Lattice Parameter ◽  
Anisotropy Constant ◽  
Spin Reorientation ◽  
X Ray Diffraction ◽  
Diffraction Patterns ◽  
Low Magnetic Field ◽  
Operating Temperature Range

The Tb/Dy ratio of Tb0.30Dy0.70Fe1.95 giant magnetostrictive alloy was shifted away from 0.30/0.70 to 0.36/0.64 to enlarge the operating temperature range. However, the magnetostriction was reduced under low magnetic field and its hysteresis was enlarged with the shift of Tb/Dy ratio. Ho addition improves the magnetostriction under low magnetic field and reduces the hysteresis of TbxDyyHozFe1.95 (x+y+z=1). The crystal structure, lattice constant, Curie temperature, spin reorientation temperature, magnetization, magnetic anisotropy and magnetostriction of TbxDyyHozFe1.95 alloys were investigated. X-ray diffraction patterns demonstrate that all the samples possess MgCu2-type cubic Laves structure. The lattice parameter, Curie temperature and magnetic anisotropy constant K1 decreased with increasing Ho concentration. The hysteresis represented by the width of magnetostriction versus the applied field was reduced due to the addition of Ho. At a compressive stress of 10 MPa and a magnetic field of 1000Oe, the addition of Ho to the ternary TbxDyyFe1.95 compound reduced the width of magnetostriction by 25% for Tb0.296Dy0.472Ho0.232Fe1.95 and by 27% for Tb0.296Dy0.472Ho0.232Fe1.95 compared to the Tb0.36Dy0.64Fe1.95 alloy, while the strains were reduced by only 3% and 9%.

scholarly journals Spin Seebeck Effect of Correlated Magnetic Molecules

2021 ◽  
Author(s):  
Anand Manaparambil ◽  
Ireneusz Weymann
Keyword(s):  
Magnetic Anisotropy ◽  
Exchange Interaction ◽  
Thermoelectric Properties ◽  
Seebeck Effect ◽  
Group Method ◽  
Model Parameters ◽  
Strongly Correlated ◽  
Spin Seebeck Effect ◽  
Molecular Core ◽  
Core Spin

Abstract In this paper we investigate the spin-resolved thermoelectric properties of strongly correlated molecular junctions in the linear response regime. The magnetic molecule is modeled by a single orbital level to which the molecular core spin is attached by an exchange interaction. Using the numerical renormalization group method we analyze the behavior of the (spin) Seebeck effect, heat conductance and figure of merit for different model parameters of the molecule. We show that the thermopower strongly depends on the strength and type of the exchange interaction as well as the molecule's magnetic anisotropy. When the molecule is coupled to ferromagnetic leads, the thermoelectric properties reveal an interplay between the spin-resolved tunneling processes and intrinsic magnetic properties of the molecule. Moreover, in the case of finite spin accumulation in the leads, the system exhibits the spin Seebeck effect. We demonstrate that a considerable spin Seebeck effect can develop when the molecule exhibits an easy-plane magnetic anisotropy, while the sign of the spin thermopower depends on the type and magnitude of the molecule's exchange interaction.

scholarly journals Probing the temperature-dependent magnetic anisotropy and longitudinal spin Seebeck effect in Y3Fe5O12

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 055912 ◽  
Author(s):  
Vijaysankar Kalappattil ◽  
Raja Das ◽  
Manh-Huong Phan ◽  
Hariharan Srikanth
Keyword(s):  
Magnetic Anisotropy ◽  
Seebeck Effect ◽  
Temperature Dependent ◽  
Spin Seebeck Effect ◽  
Longitudinal Spin

scholarly journals Spin Seebeck effect of correlated magnetic molecules

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Anand Manaparambil ◽  
Ireneusz Weymann
Keyword(s):  
Magnetic Anisotropy ◽  
Exchange Interaction ◽  
Thermoelectric Properties ◽  
Seebeck Effect ◽  
Group Method ◽  
Model Parameters ◽  
Strongly Correlated ◽  
Spin Seebeck Effect ◽  
Molecular Core ◽  
Core Spin

AbstractIn this paper we investigate the spin-resolved thermoelectric properties of strongly correlated molecular junctions in the linear response regime. The magnetic molecule is modeled by a single orbital level to which the molecular core spin is attached by an exchange interaction. Using the numerical renormalization group method we analyze the behavior of the (spin) Seebeck effect, heat conductance and figure of merit for different model parameters of the molecule. We show that the thermopower strongly depends on the strength and type of the exchange interaction as well as the molecule’s magnetic anisotropy. When the molecule is coupled to ferromagnetic leads, the thermoelectric properties reveal an interplay between the spin-resolved tunneling processes and intrinsic magnetic properties of the molecule. Moreover, in the case of finite spin accumulation in the leads, the system exhibits the spin Seebeck effect. We demonstrate that a considerable spin Seebeck effect can develop when the molecule exhibits an easy-plane magnetic anisotropy, while the sign of the spin thermopower depends on the type and magnitude of the molecule’s exchange interaction.

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