Issue 7, 2004
From the journal:

Journal of Materials Chemistry

Homogeneity field and magnetoresistance of the Ca(Mn,Cu)7O12 solid solution prepared in oxygen

E. A. Pomerantseva,a   D. M. Itkis,a   E. A. Goodilin,*ab   J. G. Noudem,c   M. V. Lobanov,d   M. Greenblattd  and  Yu. D. Tretyakovab  

* Corresponding authors

a Faculty of Materials Science, Moscow State University, Lenin Hills, Moscow, Russia
E-mail: goodilin@inorg.chem.msu.ru
Fax: +7-(095)-9390998

b Chemistry Faculty, Moscow State University, Lenin Hills, Moscow, Russia

c Laboratoire CRISMAT, UMR CNRS ISMRA 6508, 6 bd Maréchal Juin, 14050 Caen Cadex, France

d Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, USA

Abstract

CaMn3 − xCuxMn4O12 solid solution (0 ≤ x ≤ 1.5) was prepared in pure oxygen at 850 °C and ambient pressure. The compound was synthesized either with KCl, added as a mineralizer to precursors, or annealing the mechanically activated oxide precursor. These synthetic methods allowed optimization of the microstructure of the samples to reproducibly yield the record negative magnetoresistance of −65% at 35 K in a field of 5 T, for x = 1.0.

Graphical abstract: Homogeneity field and magnetoresistance of the Ca(Mn,Cu)7O12 solid solution prepared in oxygen

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Article information

DOI
https://doi.org/10.1039/B313570E
Article type
Paper
Submitted
28 Oct 2003
Accepted
23 Jan 2004
First published
25 Feb 2004

J. Mater. Chem., 2004,14, 1150-1156

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Homogeneity field and magnetoresistance of the Ca(Mn,Cu)7O12 solid solution prepared in oxygen

E. A. Pomerantseva, D. M. Itkis, E. A. Goodilin, J. G. Noudem, M. V. Lobanov, M. Greenblatt and Yu. D. Tretyakov, J. Mater. Chem., 2004, 14, 1150 DOI: 10.1039/B313570E

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