Homogeneity field and magnetoresistance of the Ca(Mn, Cu)(7)O-12 solid solution prepared in oxygenстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:CaMn3-xCuxMn4O12 solid solution (0 less than or equal to x less than or equal to 1.5) was prepared in pure oxygen at 850 degreesC 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.