Structures and Electromagnetic Properties of New Metal-Ordered Manganites: RBaMn2O6 (R=Y and Rare-Earth Elements).

DOI Web Site Web Site BIBCODE 18 Citations 13 References
  • Nakajima Tomohiko
    Materials Design and Characterization Laboratory,
  • Kageyama Hiroshi
    Materials Design and Characterization Laboratory,
  • Yoshizawa Hideki
    Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
  • Ueda Yutaka
    Materials Design and Characterization Laboratory,

Bibliographic Information

Other Title
  • Structures and Electromagnetic Properties of New Metal-Ordered Manganites:<i>R</i>BaMn<sub>2</sub>O<sub>6</sub>(<i>R</i>=Y and Rare-Earth Elements)

Search this article

Abstract

New metal-ordered manganites RBaMn2O6 can be classified into three groups based on the structural and electromagnetic properties measured. The first group (R=Tb, Dy and Ho) shows three successive phase transitions, namely, structural, charge/orbital order (CO) and antiferromagnetic order (AF) transitions on cooling, as observed in YBaMn2O6. The second group (R=Sm, Eu and Gd) exhibits a CO transition, followed by an AF transition. The third group (R=La, Pr and Nd) exhibits a metallic ferromagnetic transition, followed by an A-type AF transition in PrBaMn2O6 and NdBaMn2O6. Compared with metal-disordered (R0.53+A0.52+)MnO3, RBaMn2O6 has two remarkable features: (1) the high CO transition temperature (TCO) above 340 K and (2) the presence of a structural transition above TCO in the first group. These are closely related to the structural feature that the MnO2 sub-lattice is sandwiched by two types of rock-salt layers, RO and BaO, with different lattice sizes.

Journal

Citations (18)*help

See more

References(13)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top