Issue 25, 2020

A new oxygen-free cobalt-based compound SmCoAsF with multiple magnetic transitions

Abstract

A new quaternary oxygen-free cobalt-based compound, SmCoAsF, which crystallizes with a tetragonal ZrCuSiAs-type structure, was synthesized via a solid state metathesis (SSM) reaction. The lattice constants a and c of SmCoAsF were 3.9555(0) Å and 8.2462(2) Å, respectively. Based on the measurements of electrical resistivity and magnetization, it was inferred that the as-synthesized sample mainly underwent a ferromagnetic (FM) transition at Tc ∼ 70 K, followed by an antiferromagnetic (AFM) transition at a lower temperature, TN1 ∼ 40 K. The third magnetic transition at TN2 ∼ 6 K was also observed clearly in the magnetic measurements. SmCoAsF with a rich magnetic phase is expected to be a new member of the quaternary cobalt-based system and contribute to the explorations of the origin of magnetic state transitions.

Graphical abstract: A new oxygen-free cobalt-based compound SmCoAsF with multiple magnetic transitions

Supplementary files

Article information

Article type
Paper
Submitted
24 Mar 2020
Accepted
25 May 2020
First published
12 Jun 2020

CrystEngComm, 2020,22, 4268-4274

A new oxygen-free cobalt-based compound SmCoAsF with multiple magnetic transitions

D. Lin, Q. Luo, H. Zheng, L. Tang, W. Zhan and K. Tang, CrystEngComm, 2020, 22, 4268 DOI: 10.1039/D0CE00448K

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