High Curie Temperature Bi1.85Mn0.15Te3 Nanoplates

Bi1.85Mn0.15Te3 hexagonal nanoplates with a width of ∼200 nm and a thickness of ∼20 nm were synthesized using a solvothermal method. According to the structural characterization and compositional analysis, the Mn2+ and Mn3+ ions were found to substitute Bi3+ ions in the lattice. High-level Mn doping...

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Veröffentlicht in:Journal of the American Chemical Society 2012-11, Vol.134 (46), p.18920-18923
Hauptverfasser: Cheng, Lina, Chen, Zhi-Gang, Ma, Song, Zhang, Zhi-dong, Wang, Yong, Xu, Hong-Yi, Yang, Lei, Han, Guang, Jack, Kevin, Lu, Gaoqing (Max), Zou, Jin
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Sprache:eng
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Zusammenfassung:Bi1.85Mn0.15Te3 hexagonal nanoplates with a width of ∼200 nm and a thickness of ∼20 nm were synthesized using a solvothermal method. According to the structural characterization and compositional analysis, the Mn2+ and Mn3+ ions were found to substitute Bi3+ ions in the lattice. High-level Mn doping induces significant lattice distortion and decreases the crystal lattice by 1.07% in the a axis and 3.18% in the c axis. A high ferromagnetic state with a Curie temperature of ∼45 K is observed in these nanoplates due to Mn2+ and Mn3+ ion doping, which is a significant progress in the field of electronics and spintronics.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja308933k