LaMn3Ni2Mn2O12: An A- and B-Site Ordered Quadruple Perovskite with A-Site Tuning Orthogonal Spin Ordering Articles uri icon

authors

  • YIN, YUN YU
  • SHEN, XI
  • YU, RICHENG
  • ALONSO, JOSE ANTONIO
  • MUÑOZ CASTELLANOS, ANGEL
  • YANG, YI FENG
  • JIN, CHANGQIN
  • HU, ZHIWEI
  • LONG, YOUWEN
  • LIU, MIN
  • DAI, JIAN HONG
  • WANG, XIAO
  • ZHOU, LONG
  • CAO, HUIBO
  • DE LA CRUZ, CLARINA
  • CHEN, CHIEN TE
  • XU, YUANJI

publication date

  • December 2016

start page

  • 8988

end page

  • 8996

issue

  • 24

volume

  • 28

International Standard Serial Number (ISSN)

  • 0897-4756

Electronic International Standard Serial Number (EISSN)

  • 1520-5002

abstract

  • A new oxide, LaMn3Ni2Mn2O12, was prepared by high-pressure and high-temperature synthesis methods. The compound crystallizes in an AA'3B2Bi2O12-tYPe Ai siteand B site ordered quadruple perovskite structure. The charge combination is confirmed to be LaMn33+Ni2 2Mn24+O12, where La and Mn3+ are 1:3 ordered at the A and A' sites and the Ni2+ and Mn4+ are also distributed at the B and B' sites in an orderly fashion in a rocksalt-type manner, respectively. A G-type antiferromagnetic ordering originating from the A'-site Mn3+-sublattice is found to occur at T-N approximate to C-Z% 46 K. Subsequently, the spin coupling between the B-site Ni' and B+-site Mn4+ sublattices leads to an orthogonally ordered spin alignment with a net ferromagnetic component near T-C approximate to 34 K First-principles calculations demonstrate that the A'-site Mn" spins play a crucial role in determining the spin structure of the B and B' sites.

keywords

  • high-pressure synthesis; bond-valence parameters; magnetic-properties; crystal-structure; charge-transfer; magnetoresistance; temperature; oxide; diffraction; transition