Spontaneous rotation of ferrimagnetism driven by antiferromagnetic spin canting

Journal article

Spin-reorientation phase transitions that involve the rotation of a crystal's magnetization have been well characterized in distorted-perovskite oxides such as orthoferrites. In these systems spin reorientation occurs due to competing rare-earth and transition metal anisotropies coupled via f-d exchange. Here, we demonstrate an alternative paradigm for spin reorientation in distorted perovskites. We show that the R_{2}CuMnMn_{4}O_{12} (R=Y or Dy) triple A-site columnar-ordered quadruple perovskites have three ordered magnetic phases and up to two spin-reorientation phase transitions. Unlike the spin-reorientation phenomena in other distorted perovskites, these transitions are independent of rare-earth magnetism, but are instead driven by an instability towards antiferromagnetic spin canting likely originating in frustrated Heisenberg exchange interactions, and the competition between Dzyaloshinskii-Moriya and single-ion anisotropies.

Authors: Vibhakar, AM; Khalyavin, DD; Manuel, P; Liu, J; Belik, AA

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Physical Society
• Journal: Physical Review Letters
• Volume: 124
• Issue: 12
• Article number: 127201
• Publication date: 2020-03-23
• Acceptance date: 2020-02-28
• DOI: 10.1103/physrevlett.124.127201
• EISSN: 1079-7114
• ISSN: 0031-9007
• Pmid: 32281828
• Language: English
• Keywords: FFR