Synthesis and magnetic properties of LaSr2CoMnO7

A new oxide phase LaSr 2 CoMnO 7.00±0.05 , a member of the Raddlesden-Popper homologous series A n + 1 B n O 3 n + 1 ( n = 2), was synthesized, and its structure and magnetic properties characterized. The unit cell of this phase was indexed in terms of space group I 4/ mmm with the parameters a = 0....

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Bibliographic Details
Published inRussian journal of inorganic chemistry Vol. 53; no. 5; pp. 681 - 685
Main Authors Chupakhina, T. I., Bazuev, G. V.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.05.2008
Subjects
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Synthesis and Properties of Inorganic Compounds
Magnetic Susceptibility
Manganite
XANES Spectrum
Oxidation Number
Magnetic Anomaly
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Summary:A new oxide phase LaSr 2 CoMnO 7.00±0.05 , a member of the Raddlesden-Popper homologous series A n + 1 B n O 3 n + 1 ( n = 2), was synthesized, and its structure and magnetic properties characterized. The unit cell of this phase was indexed in terms of space group I 4/ mmm with the parameters a = 0.3831(2) nm, c = 2.0070(1) nm. The magnetic susceptibility as a function of temperature obeys the Curie-Weiss law in the range 250–350 K. At low temperatures, magnetic anomalies are observed due to the competition between antiferromagnetic and ferromagnetic ordering and spin-glass transition. The charge state of transition metals was ascertained proceeding from magnetic measurements and XANES spectra.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023608050033