Successive Phase Transitions in a Metal-Ordered Manganite Perovskite YBaMn2O6

T. Nakajima; H. Kageyama; Y. Ueda

doi:10.1016/S0022-3697(02)00117-8

Successive Phase Transitions in a Metal-Ordered Manganite Perovskite YBaMn2O6

Strongly Correlated Electrons 2009-11-07 v1

Authors: T. Nakajima , H. Kageyama , Y. Ueda

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Abstract

Structural, magnetic and electric properties of a metal-ordered perovskite YBaMn2O6 have been studied by means of powder X-ray diffraction, DSC, magnetic susceptibility, and electric resistivity. It is found that this material undergoes a 1st order structural phase transition at Tc1=520 K, from a pseudo orthorhombic (monoclinic) phase to a pseudo tetragonal (monoclinic) one. Accompanied by this transition, the susceptibility exhibits a sharp drop, where ferromagnetic exchange interaction becomes antiferromagnetic. Furthermore, two more transitions, a metal-insulator transition at Tc2=480 K and an antiferromagnetic ordering at Tc3=200 K, have been observed respectively.

Keywords

phase transition manganite metal-insulator transition antiferromagnetic ordering structural transition

Cite

@article{arxiv.cond-mat/0110114,
  title  = {Successive Phase Transitions in a Metal-Ordered Manganite Perovskite YBaMn2O6},
  author = {T. Nakajima and H. Kageyama and Y. Ueda},
  journal= {arXiv preprint arXiv:cond-mat/0110114},
  year   = {2009}
}

Comments

4 pages, 5 figures, proceedings for ISSP8

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