Synthesis and magnetism of a Li2FeSiO4 single crystal

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:477

Article; Proceedings Paper

Hergett, W.¹  Jonak, M.¹  Werner, J.¹  Billert, F.¹  Sauerland, S.¹  Koo, C.¹  Neef, C.¹  Klingeler, R.^1,2 

[1] Heidelberg Univ, Kirchhoff Inst Phys, INF 227, D-69120 Heidelberg, Germany

[2] Heidelberg Univ, Ctr Adv Mat, INF 225, D-69120 Heidelberg, Germany

关键词: Single crystal growth;    High-pressure optical floating-zone technique;    Magnetisation;    Magnetostriction;    Low-dimensional magnetism;   

DOI  :  10.1016/j.jmmm.2019.01.032

来源: Elsevier

【 摘 要 】

A macroscopic single crystal of gamma(II)-Li2FeSiO4 has been grown by means of the high-pressure optical floating-zone technique. Static magnetic susceptibility chi implies that the tetrahedrally-coordinated Fe2+ ions are in the high-spin, S = 2, state. While a sharp decrease in chi implies long-range antiferromagnetic order below T-N = 17.0(5) K, the presence of a broad maximum at T-m = 28 K suggests quasi-low-dimensional magnetism. Applying magnetic fields along the easy magnetic a-axis yields additional contributions to the susceptibility. partial derivative M/partial derivative B and magnetostriction for B > 7 T, and an anomaly at B approximate to 14.8 T.

【 授权许可】

Free