MAGNETIC STUDIES OF METALLIC PEROVSKITE-TYPE COMPOUNDS OF MANGANESE
MAGNETIC STUDIES OF METALLIC PEROVSKITE-TYPE COMPOUNDS OF MANGANESE
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DOI：
10.1143/jpsj.44.781
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发表时间：
1978-01-01
影响因子：
1.7
通讯作者：
BERTAUT, EF
中科院分区：
文献类型：
--
作者：
FRUCHART, D;BERTAUT, EF
在金属钙钛矿Mn 3 MX（M=金属，X=C，N）的这项研究中，我们强调的影响（外）电子浓度上的顺序的晶体学转变，磁有序温度和恒定（保利型）的磁化率的一部分。各种各样的观察到的磁性结构和过渡（包括自旋旋转）的碳化物和氮化物。Labbé-Jardin紧束缚模型在费米面附近激发了N和Mn轨道的p-dII杂化，提供了态密度随温度变化的可能性，并与实验定性一致。这也解释了X上的小替换比M上的小替换具有更大的影响。
In this study of metallic perovskites Mn3MX (M=metal, X=C, N) we emphasize the influence of the (outer) electron concentration on the sequences of crystallographic transitions, on the magnetic ordering temperatures and on the constant (Pauli-type like) part of the magnetic susceptibility. A great variety of observed magnetic structures and transitions (including spin rotations) are described for carbides and nitrides. The Labbé-Jardin tight binding model which invokes a p-dIIhybridization between N and Mn orbitals having their energy levels near to the Fermi surface provides the possibility of great variations of the density of states versus temperature and is in qualitative agreement with experiment. It also explains that small substitutions on X have a more drastical effect than those can M.