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  Observation of novel charge ordering and spin reorientation in perovskite oxide PbFeO3

Ye, X., Zhao, J., Das, H., Sheptyakov, D., Yang, J., Sakai, Y., et al. (2021). Observation of novel charge ordering and spin reorientation in perovskite oxide PbFeO3. Nature Communications, 12: 1917, pp. 1-11. doi:10.1038/s41467-021-22064-9.

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 Creators:
Ye, Xubin1, Author
Zhao, Jianfa1, Author
Das, Hena1, Author
Sheptyakov, Denis1, Author
Yang, Junye1, Author
Sakai, Yuki1, Author
Hojo, Hajime1, Author
Liu, Zhehong1, Author
Zhou, Long1, Author
Cao, Lipeng1, Author
Nishikubo, Takumi1, Author
Wakazaki, Shogo1, Author
Dong, Chen1, Author
Wang, Xiao2, Author              
Hu, Zhiwei3, Author              
Lin, Hong-Ji1, Author
Chen, Chien-Te1, Author
Sahle, Christoph1, Author
Efiminko, Anna1, Author
Cao, Huibo1, Author
Calder, Stuart1, AuthorMibu, Ko1, AuthorKenzelmann, Michel1, AuthorTjeng, Liu Hao4, Author              Yu, Runze1, AuthorAzuma, Masaki1, AuthorJin, Changqing1, AuthorLong, Youwen1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
3Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
4Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              

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 Abstract: PbMO3 (M = 3d transition metals) family shows systematic variations in charge distribution and intriguing physical properties due to its delicate energy balance between Pb 6s and transition metal 3d orbitals. However, the detailed structure and physical properties of PbFeO3 remain unclear. Herein, we reveal that PbFeO3 crystallizes into an unusual 2ap × 6ap × 2ap orthorhombic perovskite super unit cell with space group Cmcm. The distinctive crystal construction and valence distribution of Pb2+0.5Pb4+0.5FeO3 lead to a long range charge ordering of the -A-B-B- type of the layers with two different oxidation states of Pb (Pb2+ and Pb4+) in them. A weak ferromagnetic transition with canted antiferromagnetic spins along the a-axis is found to occur at 600 K. In addition, decreasing the temperature causes a spin reorientation transition towards a collinear antiferromagnetic structure with spin moments along the b-axis near 418 K. Our theoretical investigations reveal that the peculiar charge ordering of Pb generates two Fe3+ magnetic sublattices with competing anisotropic energies, giving rise to the spin reorientation at such a high critical temperature. © 2021, The Author(s).

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Language(s): eng - English
 Dates: 2021-03-262021-03-26
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1038/s41467-021-22064-9
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 Sequence Number: 1917 Start / End Page: 1 - 11 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723