LaMn3Rh4O12: An antiferromagnetic quadruple perovskite synthesized at high pressure

Meixia Wu, Corey E. Frank, Yifeng Han, Mark Croft, David Walker, Martha Greenblatt, Man Rong Li

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A quadruple perovskite LaMn3Rh4O12 with A′ = Mn and B = 4d transition metal was synthesized at high pressure (8 GPa) and temperature (1423 K) for the first time. Room temperature powder X-ray diffraction indicates that LaMn3Rh4O12 forms in cubic symmetry (Im3, a = 7.4997(1) Å). X-ray absorption near-edge spectroscopy shows predominantly Mn3+ and Rh3+ oxidation states. An antiferromagnetic transition at TN ∼41 K is corroborated by specific heat measurements. The resistivity measurements indicate a three-dimensional Mott variable-range hopping conduction mechanism between 300 and 160 K.

Original languageEnglish (US)
Pages (from-to)10280-10286
Number of pages7
JournalInorganic Chemistry
Volume58
Issue number15
DOIs
StatePublished - Aug 5 2019

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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