Large orbital moments and internal magnetic fields in lithium nitridoferrate(I) -: art. no. 207202

被引：40
|
作者：
Klatyk, J
Schnelle, W
Wagner, FR
Niewa, R
Novák, P
Kniep, R
Waldeck, M
Ksenofontov, V
Gütlich, P
机构：
[1] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany
[2] Univ Mainz, Inst Anorgan Chem & Analyt Chem, D-55099 Mainz, Germany
来源：
PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 20期
关键词：
D O I：
10.1103/PhysRevLett.88.207202
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The iron nitridometalates Li-2[ (Li1-x Fe (I)(x))N] display ferromagnetic ordering and spin freezing. Large magnetic moments up to 5.0mu(B)/Fe are found in the magnetization. In Mossbauer effect studies huge hyperfine magnetic fields up to 696 kOe are observed at specific Fe sites. These extraordinary fields and moments originate in an unusual ligand field splitting for those Fe species leading [within local spin density approximation (LSDA)] to a localized orbitally degenerate doublet. Including spin-orbit interaction and strong intra-atomic electron correlation (LDA+SO+U) gives rise to a large orbital momentum.
引用
收藏
页码：2072021 / 2072024
页数：4
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