1. Robust Room-TemperatureFerromagnetism with GiantAnisotropy in Nd-Doped ZnO Nanowire Arrays.
- Author
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Wang, Dandan, Chen, Qian, Xing, Guozhong, Yi, Jiabao, Rahman Bakaul, Saidur, Ding, Jun, Wang, Jinlan, and Wu, Tom
- Subjects
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FERROMAGNETISM , *TEMPERATURE effect , *ANISOTROPY , *NANOWIRES , *NEODYMIUM , *ZINC oxide , *SPINTRONICS - Abstract
As an important class of spintronic material, ferromagneticoxidesemiconductors are characterized with both charge and spin degreesof freedom, but they often show weak magnetism and small coercivity,which limit their applications. In this work, we synthesized Nd-dopedZnO nanowire arrays which exhibit stable room temperature ferromagnetismwith a large saturation magnetic moment of 4.1 μB/Nd as well as a high coercivity of 780 Oe, indicating giant magneticanisotropy. First-principles calculations reveal that the remarkablemagnetic properties in Nd-doped ZnO nanowires can be ascribed to theintricate interplay between the spin moments and the Nd-derived orbitalmoments. Our complementary experimental and theoretical results suggestthat these magnetic oxide nanowires obtained by the bottom-up synthesisare promising as nanoscale building blocks in spintronic devices. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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