INTRINSIC MAGNETIC-PROPERTIES OF R2FE17CYNXCOMPOUNDS - (R=Y, SM, ER, AND TM)

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	INTRINSIC MAGNETIC-PROPERTIES OF R2FE17CYNXCOMPOUNDS - (R=Y, SM, ER, AND TM)
	X. C. Kou; R. Grossinger; M. Katter; J. Wecker; L. Schultz; T. H. Jacobs; K. H. J. Buschow
	1991
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	70 期号:4 页码:2272-2282
摘要	Samples of R2Fe17C(y)N(x) (R = Y, Sm, Er, Tm) were prepared by arc melting appropriate amount of R, Fe, and C, vacuum annealing at 1373 K and finally annealing at 740 K in nitrogen for 10 h. The magnetic properties of these compounds were investigated by means of ac initial susceptibility, magnetization measurements, and x-ray diffraction. The thermal stability of the nitride phase was studied by differential scanning calorimetry. It was found that, when heated above 600 K, R2Fe17C(y)N(x) irreversibly decomposes N which is irrespective of the carbon concentration and rare-earth element. The Curie temperatures of R2Fe17C(y)N(x) are independent of the carbon concentration and are approximately 400 K higher than those of the corresponding pure R2Fe17 compounds. However, the Curie temperatures cannot be correlated to the composition x of the initial R2Fe17C(y)N(x) compounds at room temperature because some N was lost during the heating to T(c). In the Er and Tm compounds spin reorientation transitions were found, marking the change of the easy magnetization direction from the c axis to the basal plane with increasing temperature. The Tm compounds show an additional magnetic transition at low temperatures (below 40 K). A coexistence of the hexagonal and the rhombohedral structural modifications was found in Er2Fe17C(y)N(x) when y < 1.5, characterized by two different spin reorientation temperatures. The anisotropy fields of Sm2Fe17C(y)N(x) are higher than that of Sm2Fe17N(x). Indications of a magnetic phase transition were found also in Sm2Fe17C0.7N(x) and Sm2Fe17C0.9N(x).
部门归属	vienna tech univ,inst exptl phys,a-1040 vienna,austria. siemens ag,res labs,w-8520 erlangen,germany. kamerlingh onnes lab,2300 ra leiden,netherlands. philips res labs,5600 ja eindhoven,netherlands.;kou, xc (reprint author), acad sinica,inst metal res,shenyang 110015,peoples r china
关键词	Magnetocrystalline Anisotropy Carbides Alloys
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/39407
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. C. Kou,R. Grossinger,M. Katter,et al. INTRINSIC MAGNETIC-PROPERTIES OF R2FE17CYNXCOMPOUNDS - (R=Y, SM, ER, AND TM)[J]. Journal of Applied Physics,1991,70(4):2272-2282.
APA	X. C. Kou.,R. Grossinger.,M. Katter.,J. Wecker.,L. Schultz.,...&K. H. J. Buschow.(1991).INTRINSIC MAGNETIC-PROPERTIES OF R2FE17CYNXCOMPOUNDS - (R=Y, SM, ER, AND TM).Journal of Applied Physics,70(4),2272-2282.
MLA	X. C. Kou,et al."INTRINSIC MAGNETIC-PROPERTIES OF R2FE17CYNXCOMPOUNDS - (R=Y, SM, ER, AND TM)".Journal of Applied Physics 70.4(1991):2272-2282.