Crystal structure and magnetic properties of LaCa0.143 (4)O0.857 (4)F0.143 (4)Bi0.857 (4)S2

Rongtie Huang; Hui Zhang; Dong Wang; Chuanbing Cai; Fuqiang Huang

doi:10.1107/S2056989016008082

Crystal structure and magnetic properties of LaCa0.143 (4)O0.857 (4)F0.143 (4)Bi0.857 (4)S2

Acta Crystallogr E Crystallogr Commun. 2016 May 24;72(Pt 6):845-8. doi: 10.1107/S2056989016008082. eCollection 2016 Jun 1.

Authors

Rongtie Huang¹, Hui Zhang², Dong Wang³, Chuanbing Cai³, Fuqiang Huang²

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China; Department of Physics, Shanghai University, Shanghai 200444, People's Republic of China.
² State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China.
³ Department of Physics, Shanghai University, Shanghai 200444, People's Republic of China.

Abstract

The synthesis, structure, and magnetic properties of lithium dibarium calcium oxide fluoride di-sulfide are reported. LaCa0.143 (4)O0.857 (4)F0.143 (4)Bi0.857 (4)S2 crystallizes in the tetra-gonal space group P4/nmm. The structure exhibits disorder of the Ca(2+) and Bi(3+) cations, and the O(2-) and F(-) anions. The structure is composed of a stacking of [(O,F)2La2] layers and double [(Bi,Ca)S2] layers. Magnetic property measurements indicate a very small magnetization at 300 K and the existence of weak ferromagnetism at 2 K.

Keywords: crystal structure; disorder; magnetic properties.