High-Pressure Synthesis of Quadruple Perovskite Oxide CaCu3Cr2Re2O12 with a High Ferrimagnetic Curie Temperature

  • Jie Zhang
  • , Zhehong Liu
  • , Xubin Ye
  • , Xiao Wang
  • , Dabiao Lu
  • , Haoting Zhao
  • , Maocai Pi
  • , Chien Te Chen
  • , Jeng Lung Chen
  • , Chang Yang Kuo
  • , Zhiwei Hu
  • , Xiaohui Yu
  • , Xueqiang Zhang
  • , Zhao Pan*
  • , Youwen Long*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

An AA’3B2B’2O12-type quadruple perovskite oxide of CaCu3Cr2Re2O12 was synthesized at 18 GPa and 1373 K. Both an A- and B-site ordered quadruple perovskite crystal structure was observed, with the space group Pn-3. The valence states are verified to be CaCu32+Cr23+Re25+O12 by bond valence sum calculations and synchrotron X-ray absorption spectroscopy. The spin interaction among Cu2+, Cr3+, and Re5+ generates a ferrimagnetic transition with the Curie temperature (TC) at about 360 K. Moreover, electric transport properties and specific heat data suggest the presence of a half-metallic feature for this compound. The present study provides a promising quadruple perovskite oxide with above-room-temperature ferrimagnetism and possible half-metallic properties, which shows potential in the usage of spintronic devices.

Original languageEnglish
Pages (from-to)3499-3505
Number of pages7
JournalInorganic Chemistry
Volume63
Issue number7
DOIs
Publication statusPublished - 19 Feb 2024
Externally publishedYes

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