Evidence for spin-fracton relaxation in the polymer resin P4VP doped with Kramers ions Co2+, Nd3+, and Y3+

Authors
Pescia, J Misra, SK Zaripov, M
Citation
J. Pescia et al., Evidence for spin-fracton relaxation in the polymer resin P4VP doped with Kramers ions Co2+, Nd3+, and Y3+, PHYS REV L, 83(9), 1999, pp. 1866-1869
Citations number
22
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
9
Year of publication
1999
Pages
1866 - 1869
Database
ISI
SICI code
0031-9007(19990830)83:9<1866:EFSRIT>2.0.ZU;2-D
Abstract
An analysis of the temperature dependency of the relaxation rate (T-1(-1)) in three poly-4-vinylpyridine (P4VP) resin samples, possessing fractal stru cture, doped with the Kramers ions Co2+, Yb3+, and Nd3+ indicated spin-frac ton relaxation over the 4.2-20 K range consistent with the Raman process in volving two-fracton inelastic scattering characterized by high localization .