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  High-temperature ferromagnetic semiconductor with a field-tunable green fluorescent effect

Zhou, B., Zhao, Q., Liu, Z., Shen, X., Ye, X., Shi, J., et al. (2020). High-temperature ferromagnetic semiconductor with a field-tunable green fluorescent effect. NPG Asia Materials, 12(1): 69, pp. 1-6. doi:10.1038/s41427-020-00250-3.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-5D49-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-5D4B-E
Genre: Journal Article

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 Creators:
Zhou, Bowen1, Author
Zhao, Qing1, Author
Liu, Zhehong1, Author
Shen, Xudong1, Author
Ye, Xubin1, Author
Shi, Jiangjian1, Author
Liao, Zhiyu1, Author
Wang, Weipeng1, Author
Hu, Zhiwei2, Author              
Lin, Hong-Ji1, Author
Chen, Chien-Te1, Author
Bian, Yuecheng1, Author
Sheng, Zhigao1, Author
Yu, Richeng1, Author
Qiu, Xianggang1, Author
Meng, Qingbo1, Author
Li, Zhi1, 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              

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Free keywords: Energy gap; Ferromagnetic materials; Ferromagnetism; Fluorescence; Iron oxides; Magnetic semiconductors; Perovskite, Band-gap semiconductors; Ferromagnetic behaviors; Ferromagnetic semiconductor; High-pressure annealing; Multi-functional materials; Multifunctional devices; Photoluminescence intensities; Visible light region, Strontium compounds
 Abstract: Ferromagnetic semiconductors with luminescent effects provide a unique platform for studying magneto-electric-optical multifunctional devices. However, little is known about such materials with spin ordering well above room temperature. By using a unique high-pressure annealing method, a Cr and Fe disordered perovskite oxide SrCr0.5Fe0.5O2.875 (SCFO) with a simple cubic structure was prepared. Magnetic measurements demonstrated the ferromagnetic behavior with a spin ordering temperature as high as 600 K. In contrast to metallic SrCrO3 and SrFeO3, SCFO, with a moderate oxygen deficiency, is a direct bandgap semiconductor with an energy gap of 2.28 eV, which is within the visible light region. As a consequence, SCFO displays a green fluorescent effect arising from the d–p bonding and anti-bonding states. Moreover, the photoluminescence intensity can be tuned by a magnetic field. This work opens up a new avenue for research on room-temperature multifunctional materials with coupled magnetic, electrical, and optical performance. © 2020, The Author(s).

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Language(s): eng - English
 Dates: 2020-10-232020-10-23
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41427-020-00250-3
 Degree: -

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Title: NPG Asia Materials
Source Genre: Journal
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Publ. Info: New York : Nature Publishing Group
Pages: - Volume / Issue: 12 (1) Sequence Number: 69 Start / End Page: 1 - 6 Identifier: ISSN: 1884-4049
CoNE: https://pure.mpg.de/cone/journals/resource/1884-4049