SCIENTIFIC ABSTRACT AMINOV, L. K. - AMIORKOV, M.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000101230001-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 20, 2001
• Sequence Number: 1
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB

1:081 62/004/011/0)2/049
Spin-lattice interaction in... 1006/B102
sound.. d and 6, respectively, are the coupling constants for particles
within one cell and for particles of two aajacent cells. The corrections
to the relaxation times of single and two-phonon processes are then
4-1
JI) K-2 and t:,( 2 )K-4. If the temperatures are not too
ebye Debye
high ~,nd the optical vibrations still low) these approximations agree well
with experimental resialta.
ASSOCIATIONt Kazansk:Ly..gosudarstvennyy universitot im. V. I, U11yanova-
Lenina (Kazan' State University imerti V. 1. Ullyanoy-Lenin)
SUBMITTEDi June 29, 1!)62
Card 2/2

S/056*/62/042/003/023/'049
Theory of spin-lattice ... B102/BI38
w Ili for the two-phonon n-),k transition the contribution
kn V.
%, k
from the perturbation Humiltonian H linoar with respect to lattice vibra-
tions) is given by
Umx. a
(6m)
Hms, MeUkXv, n(E - Ek),.),
urn@. aIfMO, 4+ N
1. (66)
UkIll. n -~* HAId. MXUMA. a-- + H*X.. M.Um...' (68)
and from H' (quadratio with respeat to lattice vibrations) by
41) < ~ I HkX-.,. J'PAFW~>,
(5), A and 6enumerate the phonons. After
cumminp over all and 0, the approximate relation
WN) < I HmA, nPA.),
kF9 Y (11) is obtained which holds for A