Microstructure evolution and coercivity enhancement in Nd-Fe-B thin films diffusion-processed by R-Al alloys (R=Nd, Pr)
| Autor: | Shengcan Ma, Zhenchen Zhong, Qiang Wang, Yigao Xie, Yanqing Fu, Qingzheng Jiang, Weibin Cui, Tongbo Zhang, Yang Yang |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Diffusion General Physics and Astronomy 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology Magnetic hysteresis Microstructure 01 natural sciences lcsh:QC1-999 Transmission electron microscopy Phase (matter) 0103 physical sciences Texture (crystalline) Thin film Composite material 0210 nano-technology lcsh:Physics |
| Zdroj: | AIP Advances, Vol 8, Iss 5, Pp 056202-056202-5 (2018) |
| ISSN: | 2158-3226 |
| Popis: | Diffusion process by Nd-Al and Pr-Al alloys was compared and investigated in Nd-Fe-B thin films. Enhanced coercivity 2.06T and good squareness was obtained by using Pr85Al15 and Nd85Al15 alloys as diffusion sources. But the coercivity of diffusion-processed thin films by Pr70Al30 and Pr55Al45 alloys decreased to 2.04T and 1.82T. High ambient coercivity of 2.26T was achieved in diffusion-processed thin film by Nd70Al30 leading to an improved coercivity thermal stability because Nd2Fe14B grains were enveloped by Nd-rich phase as seen by transmission electron microscopy Nd-loss image. Meanwhile, microstructure-dependent parameters α and Neff were improved. However, high content of Al in diffusion-processed thin film by Nd55Al45 lead to degraded texture and coercivity. |
| Databáze: | OpenAIRE |
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