Propagation of surface magnetoelastic waves in TmFeO3at the spin reorientation

1981 ◽  
Vol 52 (12) ◽  
pp. 7353-7359 ◽  
Author(s):  
G. Gorodetsky ◽  
S. Shaft ◽  
J. P. Remeika
Keyword(s):  
Spin Reorientation ◽  
Magnetoelastic Waves

Magnetoelastic Waves in Ferromagnets in the Vicinity of Lattice Structural Phase Transitions

2018 ◽  
Vol 63 (9) ◽  
pp. 836 ◽  
Author(s):  
V. G. Bar’yakhtar ◽  
A. G. Danilevich
Keyword(s):  
Phase Transitions ◽  
Structural Phase ◽  
Martensitic Phase ◽  
Spin Reorientation ◽  
Dissipative Function ◽  
Relaxation Processes ◽  
Magnetoelastic Interaction ◽  
Degenerate Ground State ◽  
Martensitic Phase Transformations ◽  
Magnetoelastic Waves

The dispersion laws for coupled magnetoelastic waves in ferromagnets with uniaxial or cubic symmetry have been calculated. The features of obtained dispersion laws in the vicinity of spin-reorientation phase transitions are analyzed. The interaction between elastic and spin waves is shown to depend on the direction of the ferromagnet magnetic moment. The influence of the magnetoelastic interaction on the dispersion law of quasispin waves in the degenerate ground state of a uniaxial “easy plane” ferromagnet is studied. The results of calculations show that the magnetoelastic interaction eliminates the degeneration and leads to the appearance of a magnetoacoustic gap in the ferromagnet spectrum. The behavior of the spectra of coupled magnetoelastic waves in the vicinity of lattice phase transitions, namely, in the vicinity of martensitic phase transformations in materials with the shape memory effect, is analyzed. The obtained results are used to interpret experimental data obtained for the Ni–Mn–Ga alloy. The phenomenon of a drastic decrease of the elastic moduli for this alloy, when approaching the martensitic phase transition point is explained theoretically. It is shown that the inhomogeneous magnetostriction is the main factor affecting the elastic characteristics of the material concerned. A model dissipative function describing the relaxation processes associated with a damping of coupled magnetoelastic waves in ferromagnets with cubic or uniaxial symmetry is developed. It takes the symmetry of a ferromagnet into account and describes both the exchange and relativistic interactions in the crystal.

SPIN REORIENTATION PHENOMENA IN SUBSTITUTED Pr2 (Co, Fe)17 INTERMETALLICS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-507-C8-508
Author(s):  
H. Y. Chen ◽  
B. M. Ma ◽  
S. G. Sankar ◽  
W. E. Wallace
Keyword(s):  
Spin Reorientation

Magnetoacoustic surface waves in magnetic crystals near spin-reorientation phase transitions

1997 ◽  
Vol 167 (7) ◽  
pp. 735-750 ◽  
Author(s):  
Yurii V. Gulyaev ◽  
Igor E. Dikshtein ◽  
Vladimir G. Shavrov
Keyword(s):  
Phase Transitions ◽  
Surface Waves ◽  
Spin Reorientation

The spin reorientation and improvement of magnetocaloric effect in HoCr1-Ga O3 (0 ≤ x ≤ 0.5)

2021 ◽  
pp. 160863
Author(s):  
Hongguang Zhang ◽  
Hu Qian ◽  
Liang Xie ◽  
Yanyan Guo ◽  
Yuzhuang Liu ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Spin Reorientation

scholarly journals Spin reorientation transition in ultrathin Co films on the vicinal surface Au(788)

AIP Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 045009
Author(s):  
R. J. G. Rosa ◽  
R. L. Souza ◽  
G. F. M. Gomes ◽  
R. M. Paniago ◽  
M. D. Martins
Keyword(s):  
Spin Reorientation ◽  
Vicinal Surface ◽  
Spin Reorientation Transition

scholarly journals Spontaneous cycloidal order mediating a spin-reorientation transition in a polar metal

2020 ◽  
Vol 102 (18) ◽  
Author(s):  
C. D. Dashwood ◽  
L. S. I. Veiga ◽  
Q. Faure ◽  
J. G. Vale ◽  
D. G. Porter ◽  
...  
Keyword(s):  
Spin Reorientation ◽  
Spin Reorientation Transition

ChemInform Abstract: The Spin Reorientation in Nd2Fe14B in the Presence of Intergrain Exchange Coupling.

ChemInform ◽  
2010 ◽  
Vol 29 (40) ◽  
pp. no-no
Author(s):  
Z. D. ZHANG ◽  
X. C. KOU ◽  
F. R. DE BOER ◽  
K. H. J. BUSCHOW
Keyword(s):  
Exchange Coupling ◽  
Spin Reorientation
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