The spin wave stiffness constant in ferromagnetic partially ordered alloys

1978 ◽  
Vol 8 (12) ◽  
pp. 2579-2592 ◽  
Author(s):  
I Takahashi ◽  
D M Edwards
Keyword(s):  
Spin Wave ◽  
Partially Ordered ◽  
Stiffness Constant ◽  
Ordered Alloys

The study of partially ordered alloys by HREM

1993 ◽  
Vol 25 (2) ◽  
pp. 169-170
Author(s):  
P. De Meulenaere ◽  
G. van Tendeloo ◽  
J. van Landuyt
Keyword(s):  
Partially Ordered ◽  
Ordered Alloys

Spin Wave Stiffness Constant of Laves Phase Invar Compound (Zr0.7Nb0.3)Fe2

1982 ◽  
Vol 51 (9) ◽  
pp. 2705-2706 ◽  
Author(s):  
Shigehumi Onodera ◽  
Yoshikazu Ishikawa ◽  
Masayuki Shiga ◽  
Ze Xianyu ◽  
Yoji Nakamura
Keyword(s):  
Spin Wave ◽  
Laves Phase ◽  
Stiffness Constant

Spin wave stiffness constant on the amorphous Co82(Ti, Zr, Hf)12B6 alloys

1995 ◽  
Vol 140-144 ◽  
pp. 345-346 ◽  
Author(s):  
Seong-Cho Yu ◽  
Yong-Goo Yoo ◽  
Wha-Nam Myung
Keyword(s):  
Spin Wave ◽  
Stiffness Constant

The Spin Wave Stiffness Constant in Ptc(Mn0.5Cr0.5)1−c Alloys

1983 ◽  
Vol 120 (1) ◽  
pp. K87-K91 ◽  
Author(s):  
D. E. G. Williams ◽  
A. Jezierski
Keyword(s):  
Spin Wave ◽  
Stiffness Constant

High-field susceptibility and spin wave stiffness constant of Co-Y amorphous alloys

1986 ◽  
Vol 22 (5) ◽  
pp. 555-557 ◽  
Author(s):  
K. Fukamichi ◽  
T. Goto ◽  
Y. Satoh ◽  
T. Sakakibara ◽  
S. Todo ◽  
...  
Keyword(s):  
Spin Wave ◽  
Amorphous Alloys ◽  
High Field ◽  
Stiffness Constant

scholarly journals Cálculo da constante de dureza em sistemas ferromagnéticos

1986 ◽  
Vol 8 (8) ◽  
pp. 07
Author(s):  
Ronaldo Mota
Keyword(s):  
Spin Wave ◽  
Exchange Coupling ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Wide Band ◽  
Band Model ◽  
Dynamical Susceptibility ◽  
Stiffness Constant ◽  
Two Band Model ◽  
Narrow Bands

A two-band model for the magnetism is used to calculate the stiffness constant in ferromagnetic systems. One band is narrow and degenerated, representing the "quasi-localized" electrons. The second one is a wide band containing very few itinerant electrons. The transverse dynamical susceptibility is calculated within the random-phase approximation (RPA). The value of the stiffness constant of the acoustical spin wave is essential to satisfy the criterion of ferromagnetic stability at T = 0K. From the poles of the susceptibility two spin-wave branches are derived: one acoustic and one optic. It is shown that taking into account the interatomic exchange coupling between electrons of the narrow bands is necessary for the spin-wave stiffness constant to assume the experimental value.

Sign in / Sign up

Export Citation Format

Share Document