Magnetic clusters and ferromagnetic spin glass in the novel hexagonal perovskite 12R-Ba4SbMn3O12

Xiaohui Yan; Junkun Wu; Xiuyun Lei; Lunhua He; Wenbin Guo; Xiaojun Kuang; Congling Yin

doi:10.1039/D3RA00607G

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Magnetic clusters and ferromagnetic spin glass in the novel hexagonal perovskite 12R-Ba₄SbMn₃O₁₂†

Xiaohui Yan,^a Junkun Wu,^a Xiuyun Lei,*^a Lunhua He,^bcd Wenbin Guo,*^a Xiaojun Kuang

^ae and Congling Yin

*^a

Author affiliations

* Corresponding authors

^a MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Guangxi Key Laboratory of Optic and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
E-mail: xylei@glut.edu.cn, guo0281@163.com, congling.yin@glut.edu.cn

^b Spallat. Neutron Source Sci. Ctr, Dongguan 523803, P. R. China

^c Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, P. R. China

^d Songshan Lake Mat Lab, Dongguan 523808, P. R. China

^e College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China

Abstract

A 12-layer hexagonal perovskite Ba₄SbMn₃O₁₂ (space group: R [3 with combining macron] m; a = 5.72733(3) Å, and c = 28.1770(3) Å) has been synthesized by high-temperature solid-state reactions and studied using powder X-ray and neutron diffraction and magnetization measurements. This 12R polytype structure contains one corner-sharing (Sb, Mn)O₆ octahedron and a trimer of face-sharing MnO₆ octahedra per formula unit. Ba₄SbMn₃O₁₂ displays a paramagnetic state of the Mn₃ magnetic cluster at 100–200 K, which partially disassociates into individual Mn ions at 250–300 K. The ferromagnetic interaction between these Mn₃ clusters is mainly mediated by Mn³⁺ at the M1 site, leading to dynamic ferromagnetic clusters below T_D = ∼70 K and ferromagnetic spin freezing transition at T_g = ∼11.5 K. The stability of Mn₃ magnetic clusters in the 12R polytypes is related to the intracluster Mn–Mn distance.

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Article information

DOI: https://doi.org/10.1039/D3RA00607G
Article type: Paper
Submitted: 29 Jan 2023
Accepted: 26 Mar 2023
First published: 11 Apr 2023
This article is Open Access

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RSC Adv., 2023,13, 11234-11240

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Magnetic clusters and ferromagnetic spin glass in the novel hexagonal perovskite 12R-Ba₄SbMn₃O₁₂

X. Yan, J. Wu, X. Lei, L. He, W. Guo, X. Kuang and C. Yin, RSC Adv., 2023, 13, 11234 DOI: 10.1039/D3RA00607G

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