Structural and magnetic properties of Sm2Fe16MAl2 (M = Mn, Mo, Ni) and their carbides
Publication in refereed journal

香港中文大學研究人員

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摘要Structural and magnetic properties of off-stoichiometric 2:17-type compounds Sm2Fe16MAl2 (M = Mn, Mo, Ni) and their carbides were studied using X-ray powder diffractometry, magnetization measurement, thermomagnetic analysis, and differential thermal analysis, All these compounds had the Th2Zn17-type structure. When Mo was added into the parent compound Sm2Fe17Al2, the unit cell was enlarged by 0.4%, larger than those of M = Ni, Mn, However, the Curie temperature T-c and saturation magnetization M-s of Sm2Fe16MoAl2 were lower than the parent because Mo atom had not effectively increased the separation of Fe-Ire pairs. When C was added to the parent and the Sm2Fe16MAl2, an increase in the volume of the unit cell and T-c, and a decrease of M-s were observed, The carbide of the parent had the largest cell dilation of 2.11%, which also exhibited relatively high T-c and M-s, When M = Ni, its carbide had the largest M,, indicating that the addition of Ni had enhanced the ferromagnetic coupling, It was also found that Sm2Fe16MnAl2C1.5 was more stable than the other compounds, and that it decomposed at about 950 degreesC.
著者Ren ZY, Ng DHL, Dai SY
會議名稱International Magnetics Conference (INTERMAG 2000)
會議開始日09.04.2000
會議完結日12.04.2000
會議地點TORONTO
期刊名稱IEEE Transactions on Magnetics
出版年份2000
月份9
日期1
卷號36
期次5
出版社IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
頁次3330 - 3332
國際標準期刊號0018-9464
電子國際標準期刊號1941-0069
語言英式英語
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic; ENGINEERING, ELECTRICAL & ELECTRONIC; Physics; Physics, Applied; PHYSICS, APPLIED

上次更新時間 2021-26-02 於 01:41