Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Ising Magnetism and Ferroelectricity in Ca3CoMnO6

There are no MPG-Authors in the publication available
External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Wu, H., Burnus, T., Hu, Z., Martin, C., Maignan, A., Cezar, J. C., et al. (2009). Ising Magnetism and Ferroelectricity in Ca3CoMnO6. Physical Review Letters, 102(2): 026404, pp. 1-4. doi:10.1103/PhysRevLett.102.026404.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-0F9B-5
The origin of both the Ising chain magnetism and ferroelectricity in Ca3CoMnO6 is studied by ab initio electronic structure calculations and x-ray absorption spectroscopy. We find that Ca3CoMnO6 has alternate trigonal prismatic Co2+ and octahedral Mn4+ sites in the spin chain. Both the Co2+ and Mn4+ are in the high-spin state. In addition, the Co2+ has a huge orbital moment of 1.7 mu(B) which is responsible for the significant Ising magnetism. The centrosymmetric crystal structure known so far is calculated to be unstable with respect to exchange striction in the experimentally observed up arrow up arrow down arrow down arrow antiferromagnetic structure for the Ising chain. The calculated inequivalence of the Co-Mn distances accounts for the ferroelectricity.