MAGNETIC PHASE-DIAGRAMS OF DYSPROSIUM IRON-GARNET (DYIG) IN HIGH DC FIELDS

Citation
M. Lahoubi et al., MAGNETIC PHASE-DIAGRAMS OF DYSPROSIUM IRON-GARNET (DYIG) IN HIGH DC FIELDS, Journal of alloys and compounds, 277, 1998, pp. 598-601
Citations number
9
Categorie Soggetti
Chemistry Physical","Metallurgy & Metallurigical Engineering","Material Science
ISSN journal
09258388
Volume
277
Year of publication
1998
Pages
598 - 601
Database
ISI
SICI code
0925-8388(1998)277:<598:MPODI(>2.0.ZU;2-K
Abstract
Magnetisation measurements have been performed on spherical single cry stals of dysprosium iron garnet (Dy3Fe5O12) in high de magnetic fields up to 16 T applied along the three principal crystallographic directi ons [111], [110] and [100]. The magnetic phase transitions near the in version (or compensation) temperature T-I between the collinear and th e field induced canted magnetic structures are observed and the differ ent associated magnetic phase diagrams precisely determined in the (H, T) plane. The mean exchange field acting on the Dy ions and the effect ive anisotropy field are deduced to be (12.9+/-0.2)T and (1.2+/-0.1) T respectively. Above 228.2+/-0.5 K, only the collinear magnetic phase exists for all the directions. These results are compared to previous high pulsed magnetic fields data. (C) 1998 Elsevier Science S.A.