Robust Crystal Phase Separation with Distinct Charge, Orbital, and Spin Orders 
in AgMn7O12

Lu, Dabiao; Zhang, Jie; Zhao, Haoting; Pi, Maocai; Ye, Xubin; Liu, Zhehong; Wang, Xiao; Zhang, Xueqiang; Pan, Zhao; Hsu, Su-Yang; Chang, Chuang-Kai; Chen, Jin-Ming; Hu, Zhiwei; Long, Youwen

doi:10.1021/acs.inorgchem.3c04360

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Robust Crystal Phase Separation with Distinct Charge, Orbital, and Spin Orders in AgMn₇O₁₂

MPS-Authors

/persons/resource/persons126666

Hu, Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Lu, D., Zhang, J., Zhao, H., Pi, M., Ye, X., Liu, Z., et al. (2024). Robust Crystal Phase Separation with Distinct Charge, Orbital, and Spin Orders in AgMn₇O₁₂. Inorganic Chemistry, 63(6), 3191-3198. doi:10.1021/acs.inorgchem.3c04360.

Cite as: https://hdl.handle.net/21.11116/0000-000E-A4C8-7

Abstract

An AA′3B4O12-type A-site-ordered quadruple perovskite oxide AgMn7O12 was prepared by high-pressure and high-temperature methods. At room temperature, the compound crystallizes into a cubic Im3̅ symmetry with a charge distribution of AgMn33+Mn43.5+O12. With the temperature decreasing to TCO,OO ≈ 180 K, the compound undergoes a structural phase transition toward a monoclinic C2/m symmetry, giving rise to a B-site charge- and orbital-ordered AgMn33+Mn23+Mn24+O12 phase. Moreover, this charge-/orbital-ordered main phase coexists with the initial cubic AgMn33+Mn43.5+O12 phase in the wide temperature range we measured. The charge-/orbital-ordered phase shows two antiferromagnetic phase transitions near 125 and 90 K, respectively. Short-range ferromagnetic correlations are found to occur for the initial B-site mixed cubic phase around 35 K. Because of the robust phase separation, considerable magnetoresistance effects are observed below TCO,OO in AgMn7O12 © 2024 American Chemical Society.