MAGNETIC SPECIFIC-HEAT AND SPIN-GLASS-LIKE ORDERING IN THE PYROCHLORES - RE2MO2O7 (RE = Y, SM, GD, HO)

Authors
RAJU NP GMELIN E
Citation
Np. Raju et E. Gmelin, MAGNETIC SPECIFIC-HEAT AND SPIN-GLASS-LIKE ORDERING IN THE PYROCHLORES - RE2MO2O7 (RE = Y, SM, GD, HO), Journal of thermal analysis, 40(1), 1993, pp. 341-347
Citations number
15
Categorie Soggetti
Chemistry Analytical
Journal title
Journal of thermal analysis → ACNP
ISSN journal
03684466
Volume
40
Issue
1
Year of publication
1993
Pages
341 - 347
Database
ISI
SICI code
0368-4466(1993)40:1<341:MSASOI>2.0.ZU;2-3
Abstract
The pyrochlores RE2Mo2O7 (RE = Y, SM, Gd, Ho) display, with the except ion of Ho2Mo2O7, magnetic transitions at 18 K, 68 K, 55 K, respectivel y. No long-range order occurs. The rare-earth atoms remain in the para magnetic state down to 1.5 K. The magnetic specific heat behaviour is explained by spin-glass-like ordering of Mo4+ ions, imposing a molecul ar field of random character on the ram-earth ions, and by crystalline field-splitting effects.