High-Pressure Synthesis of Semiconducting PbCu 3 Mn 4 O 12 with Near-Room-Temperature Ferrimagnetic Order

A transition-metal oxide of PbCu Mn O was prepared at 1523 K and 10 GPa. An A-site-ordered quadruple perovskite structure with the space group 3̅ is assigned for this compound. Based on bond-valence-sum calculations and X-ray absorption spectroscopy, the charge combination is determined to be PbCu M...

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Published inInorganic chemistry Vol. 63; no. 13; pp. 5924 - 5930
Main Authors Zhao, Haoting, Lu, Dabiao, Wang, Xiao, Ye, Xubin, Zhang, Jie, Pi, Maocai, Pan, Zhao, Chin, Yi-Ying, Chen, Chien-Te, Hu, Zhiwei, Long, Youwen
Format Journal Article
LanguageEnglish
Published United States 01.04.2024
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Summary:A transition-metal oxide of PbCu Mn O was prepared at 1523 K and 10 GPa. An A-site-ordered quadruple perovskite structure with the space group 3̅ is assigned for this compound. Based on bond-valence-sum calculations and X-ray absorption spectroscopy, the charge combination is determined to be PbCu Mn O . Due to Cu (↑)-Mn (↓) antiferromagnetic coupling, a near-room-temperature ferrimagnetic phase transition is observed at approximately 287 K. PbCu Mn O exhibits a semiconducting electric transport property with the energy band gap ≈ 0.2 eV. In addition, considerable low-field magnetoresistance effects are observed at lower temperatures. This study provides an intrinsic near-room-temperature ferrimagnetic semiconductor that exhibits potential applications in next-generation spintronic devices.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.3c04493