High-Pressure Synthesis and Ferrimagnetic Ordering of the B-Site-Ordered Cubic Perovskite Pb2FeOsO6.
Pb2FeOsO6was prepared for the first time by using high-pressure and high-temperature synthesis techniques. This compound crystallizes into a B-site-ordered double-perovskite structure with cubic symmetry Fm3̅m, where the Fe and Os atoms are orderly distributed with a rock-salt-type manner. Structure refinement shows an Fe-Os antisite occupancy of about 16.6%. Structural analysis and X-ray absorption spectroscopy both demonstrate the charge combination to be Pb2Fe3+Os5+O6. A long-range ferrimagnetic transition is found to occur at about 280 K due to antiferromagnetic interactions between the adjacent Fe3+and Os5+spins with a straight (180°) Fe-O-Os bond angle, as confirmed by X-ray magnetic circular-dichroism measurements. First-principles theoretical calculations reveal the semiconducting behavior as well as the Fe3+(↑)Os5+(↓) antiferromagnetic coupling originating from the superexchange interactions between the half-filled 3d orbitals of Fe and t2gorbitals of Os.
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
Qing
Q
Zhao
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
Min
M
Liu
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
Jianhong
J
Dai
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
Hongshan
H
Deng
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
Yunyu
Y
Yin
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
Long
L
Zhou
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
Junye
J
Yang
Max-Planck Institute for Chemical Physics of Solids , Nothnitzer Straße 40, 01187 Dresden, Germany.
Zhiwei
Z
Hu
Max-Planck Institute for Chemical Physics of Solids , Nothnitzer Straße 40, 01187 Dresden, Germany.
Stefano
S
Agrestini
Institute of Physics II, University of Cologne , Zulpicher Straße 77, 50937 Cologne, Germany.
Kai
K
Chen
ALBA Synchrotron Light Source , E-08290 Cerdanyola del Valles, Barcelona, Spain.
Eric
E
Pellegrin
ALBA Synchrotron Light Source , E-08290 Cerdanyola del Valles, Barcelona, Spain.
Manuel
M
Valvidares
Synchrotron SOLEIL, L'Orme des Merisiers , Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
Lucie
L
Nataf
Synchrotron SOLEIL, L'Orme des Merisiers , Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France.
François
F
Baudelet
Max-Planck Institute for Chemical Physics of Solids , Nothnitzer Straße 40, 01187 Dresden, Germany.
L H
LH
Tjeng
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|Collaborative Innovation Center of Quantum Matter , Beijing 100190, China.
Yi-Feng
YF
Yang
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|Collaborative Innovation Center of Quantum Matter , Beijing 100190, China.
Changqing
C
Jin
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|Collaborative Innovation Center of Quantum Matter , Beijing 100190, China.
Youwen
Y
Long