Magnetic properties of Nd1/3Sr2/3FeO3 by neutron and Mossbauer spectroscopy

被引：16

作者：

Uhm, YR ^{[1
]}

Kim, CS ^{[1
]}

机构：

[1] Kookmin Univ, Dept Phys, Seoul 136702, South Korea

来源：

JOURNAL OF APPLIED PHYSICS | 2001年 / 89卷 / 11期

关键词：

D O I：

10.1063/1.1361265

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Charge transfer type Nd1/3Sr2/3FeO3 was synthesized and its magnetic properties were investigated by neutron diffraction and Mossbauer spectroscopy at various temperatures ranging from 4.2 K to room temperature. The powder neutron diffraction shows magnetic ordering structures. The Nd1/3Sr2/3FeO3 with small lattice distortion underwent a charge ordering (CO) phase transition at and below T-CO = 163 K corresponding to a sequence of Fe+3Fe+3Fe+5Fe+3Fe+3Fe+5 aligned along the z direction of rhombohedral, as well as canted antiferromagnetic spin ordering. The spin rotation resulting from helical spin of Nd was observed at and below 25 K. At 4.2 K, the electric quadrupole splittings for Fe3+ and Fe5+ are 0.06 and 0.15 (mm/s) which were changed to -0.06 and -0.02 (mm/s) at and above 20 K. It is evidence of spin rotation in Nd1/3Sr2/3FeO3. (C) 2001 American Institute of Physics.

引用

页码：7344 / 7346

页数：3

共 12 条

[1] THE STRUCTURAL CONSEQUENCES OF CHARGE DISPROPORTIONATION IN MIXED-VALENCE IRON-OXIDES .1. THE CRYSTAL-STRUCTURE OF SR2LAFE3O8.94 AT ROOM-TEMPERATURE AND 50-K [J].