STRUCTURE AND MAGNETIC-PROPERTIES OF NEW POTASSIUM-NICKEL FLUORIDE-TYPE STRONTIUM LANTHANUM MAGNESIUM RUTHENIUM OXIDE

Authors
ITOH M MORI S INAGUMA Y BYEON SH
Citation
M. Itoh et al., STRUCTURE AND MAGNETIC-PROPERTIES OF NEW POTASSIUM-NICKEL FLUORIDE-TYPE STRONTIUM LANTHANUM MAGNESIUM RUTHENIUM OXIDE, Materials research bulletin, 31(10), 1996, pp. 1179-1187
Citations number
23
Categorie Soggetti
Material Science
Journal title
Materials research bulletin → ACNP
ISSN journal
00255408
Volume
31
Issue
10
Year of publication
1996
Pages
1179 - 1187
Database
ISI
SICI code
0025-5408(1996)31:10<1179:SAMONP>2.0.ZU;2-2
Abstract
The crystal structure and magnetic properties of new K2NiF4-type oxide s, La2-2xSr2xMg1-xRuxO4(1/3 less than or equal to x less than or equal to 1), have been investigated. Powder X-ray diffraction data were bes t fitted by the space group I4/mmm, which indicates that the arrangeme nt of Mg2+ and Ru4+ is disordered. An increase in x from 1/3 first dec reased the effective magnetic moment of ruthenium from 3.6 to 3.4 mu(B ) then increased it up to 5.0 mu(B). The tetragonal distortion of(Mg,R u)O-6 octahedra continuously decreased from 1.11 for x = 1/3 to 1.05 f or x = 1.