スピネル型Mn酸化物の合成とその雰囲気・磁気的性質 Electric and Magnetic Properties of Newly Synthesized Spinel Manganites
The crystal structure and electric and magnetic properties of newly synthesized spinel manganites were investigated. CuNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> had cubic spinel structure, and magnetoresistance effect like CMR in perovskite manganites was observed in this system for the first time. Judging from the calculation of effective-valency according to the result of Rietveld analysis, it was estimated that both of Mn<SUB>3+</SUB> and Mn<SUB>4+</SUB> are in octahedral site. This fact may be related with the reason why magnetoresistance effect appealed in this system.
粉体および粉末冶金 45(7), 636-640, 1998-07-15
Japan Society of Powder and Powder Metallurgy