Citation
T. Brennan et al., Low energy excess magnetic states in terbium metaphosphate glass, PHIL MAG B, 79(11-12), 1999, pp. 2121-2127
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICSELECTRONIC OPTICAL AND MAGNETIC PROPERTIES
ISSN journal
13642812
→ ACNP
Volume
79
Issue
11-12
Year of publication
1999
Pages
2121 - 2127
Database
ISI
SICI code
1364-2812(199911/12)79:11-12<2121:LEEMSI>2.0.ZU;2-
Abstract
The existence of a wide distribution of low energy excess magnetic states d
ue to topological disorder in a magnetic glass is confirmed experimentally
for terbium metaphosphate glasses with compositions in the vicinity of (Tb2
O3)(0.25) (P2O5)(0.75) A broad peak with a maximum at 7.5 K is found in the
magnetic contribution to the specific heat; this has its origin in the exc
ess magnetic states. A strong magnetic contribution to the inelastic neutro
n scattering, isolated by subtraction of the vibrational contribution, aris
es from a complex of slates of higher energies than those responsible for t
he magnetic contribution to the specific heat.