Effect of quenching on magnetic properties of polycrystalline Pr0.5Sr0.5MnO3 perovskite manganite

被引：33

作者：

Boujelben, W

Cheikh-Rouhou, A

Pierre, J

Joubert, JC

机构：

[1] Fac Sci Sfax, Phys Mat Lab, Sfax 3018, Tunisia

[2] CNRS, Lab Louis Neel, F-38042 Grenoble, France

[3] ENSPG, CNRS UMR 5628, Mat & Genie Phys Lab, F-38402 St Martin Dheres, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 314卷 / 1-2期

关键词：

rare earth compounds; transition metal compounds; magnetically ordered materials; magnetization; phase transition;

D O I：

10.1016/S0925-8388(00)01230-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of quenching on the magnetic properties of polycrystalline Pr0.5Sr0.5MnO3 has been investigated. Quenching samples from 1400 degreesC to room temperature in water (sample I) or in air (sample II) allows them to crystallize in two different systems and to exhibit different magnetic behavior at low temperature. Powder X-ray diffraction patterns for samples I and II could be indexed, respectively, in the rhombohedral perovskite structure with R (3) over barc space group and an orthorhombic one with Imma space group. Magnetization measurements show that bath samples exhibit a paramagnetic-ferromagnetic transition at 280 K (sample I) and 265 K (sample II). At low temperature, sample I presents a ferromagnetic canted spin state or a mixture of ferromagnetic and canted phases, while sample II behaves as an antiferromagnet below 160 K. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：15 / 21

页数：7

共 19 条

[1] Synthesis, X-ray, magnetic and electrical studies of substituted (Pr, Sr)MnO3 perovskites [J].