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Magnetic Study of the Ca1−xEuxMnO3(0≤x≤1) Perovskites

✍ Scribed by I.O. Troyanchuk; N.V. Samsonenko; H. Szymczak; A. Nabialek

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
277 KB
Volume
131
Category
Article
ISSN
0022-4596

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✦ Synopsis

The magnetization and crystal structure of Ca 1؊x Eu x MnO 3 (04x41) perovskites have been studied. It is shown that these compounds present four concentration regions in which different magnetic phases coexist. The antiferromagnetic phase is associated with a regular arrangement of Mn 3؉ and Mn 4؉ ions in ratios 1 : 3 and 1 : 1. The ferromagnetic phase is attributed to the charge disordered states and is found in 04x40.2 and 0.6(x(1 concentration ranges. The samples 0.1(x(0.2 show metamagnetic behavior which might result from the collapse of the charge ordered state (1 : 3). The CaMnO 2.94 and EuMnO 3.02 are weak ferromagnets with T N ‫؍‬ 122 and 40 K, respectively.

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