NEUTRON-DIFFRACTION AND SPIN FREEZING IN FERRATES WITH IRON IN PYRAMIDAL OXYGEN COORDINATION

Authors
SELING B EHMANN A KEMMLERSACK S LINHART J REIMERS W FILOTI G AVRAMESCU A ROSENBERG M
Citation
B. Seling et al., NEUTRON-DIFFRACTION AND SPIN FREEZING IN FERRATES WITH IRON IN PYRAMIDAL OXYGEN COORDINATION, Physica. B, Condensed matter, 234, 1997, pp. 625-627
Citations number
5
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
234
Year of publication
1997
Pages
625 - 627
Database
ISI
SICI code
0921-4526(1997)234:<625:NASFIF>2.0.ZU;2-D
Abstract
The room temperature crystal structure of Y-0212 and La-0212 contains double layers of nearly regular (Fe, Cu)O-5 quadratic pyramides. A pec ularity is the compensation of the pronounced Fe4+ content via the int roduction of additional oxygen (O(3)) in 2b. Thus a charge reservoir i s created. At 10 K the materials are basically antiferromagnetic. The gradual freezing of the Fe spins is reminescent of concentrated spin g lasses.