High-Pressure Synthesis of Two Polymorphic HgMnO3 Phases and Distinct Magnetism 
from 2D to 3D

Zhou, Bowen; Qin, Shijun; Ma, Teng; Ye, Xubin; Guo, Jia; Yu, Xiaohui; Lin, Hong-Ji; Chen, Chien-Te; Hu, Zhiwei; Tjeng, Liu-Hao; Zhou, Guanghui; Dong, Cheng; Long, Youwen

doi:10.1021/acs.inorgchem.9b03551

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High-Pressure Synthesis of Two Polymorphic HgMnO₃ Phases and Distinct Magnetism from 2D to 3D

Zhou, B., Qin, S., Ma, T., Ye, X., Guo, J., Yu, X., et al. (2020). High-Pressure Synthesis of Two Polymorphic HgMnO₃ Phases and Distinct Magnetism from 2D to 3D. Inorganic Chemistry, 59, 3887-3893. doi:10.1021/acs.inorgchem.9b03551.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-EF63-F Version Permalink: https://hdl.handle.net/21.11116/0000-0005-EF66-C

Genre: Journal Article

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Creators:
Zhou, Bowen¹, Author
Qin, Shijun¹, Author
Ma, Teng¹, Author
Ye, Xubin¹, Author
Guo, Jia¹, Author
Yu, Xiaohui¹, Author
Lin, Hong-Ji¹, Author
Chen, Chien-Te¹, Author
Hu, Zhiwei², Author
Tjeng, Liu-Hao³, Author
Zhou, Guanghui¹, Author
Dong, Cheng¹, Author
Long, Youwen¹, Author

Affiliations:
1External Organizations, ou_persistent22
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461
3Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452

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Abstract: An ilmenite-like monoclinic phase of HgMnO3 with space group P21/c was prepared using high-pressure and high-temperature methods at 18 GPa and 1473 K. The MnO6 octahedra form a two-dimensional (2D) network in the bc plane, leading to a long-range antiferromagnetic ordering with a low Néel temperature of TN ∼32 K. As the synthesis pressure increases to 20 GPa, a new perovskite-like rhombohedral phase with space group R3¯ c was found to occur. The rhombohedral phase exhibits a three-dimensional (3D) network for the MnO6 octahedra, giving rise to an antiferromagnetic ordering at TN ∼60 K. X-ray absorption spectroscopy confirms the invariable Mn4+ charge state in these two polymorphic phases, in agreement with the Curie-Weiss and bond valence sum analysis. HgMnO3 provides an interesting example to study the magnetic properties from 2D to 3D by varying synthesis pressure. Copyright © 2020 American Chemical Society.

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Language(s): eng - English

Dates: Published Online: 2020-03-03Date issued: 2020-03-03

Publication Status: Issued

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Identifiers: DOI: 10.1021/acs.inorgchem.9b03551

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Title: Inorganic Chemistry

Abbreviation : Inorg. Chem.

Source Genre: Journal

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Publ. Info: Washington, DC : American Chemical Society

Pages: - Volume / Issue: 59 Sequence Number: - Start / End Page: 3887 - 3893 Identifier: ISSN: 0020-1669
CoNE: https://pure.mpg.de/cone/journals/resource/0020-1669