论文信息 - Magnetic Properties Of YFe10.5Mo1.5Cx and their nitrides

Magnetic Properties Of YFe10.5Mo1.5Cx and their nitrides

RFe10.5Mo1.5Cx (R=Y, Nd, and Dy; x=0–0.6) have been successfully synthesized by arc melting, then followed by a gas-solid phase reaction to form YFe10.5Mo1.5CxNy. X-ray diffraction studies and thermomagnetic analysis show that all samples are of good single phase, and carbides and carbon nitrides remain the ThMn12-type structure. The addition of carbon atoms has an effect of improving the magnetic properties. Both Curie temperature and saturation magnetization are found to be increased with carbon concentration x in the RFe10.5Mo1.5Cx series, and the carbon atoms also affect the magnetocrystalline anisotropy. The easy axial anisotropy of NdFe10.5Mo1.5Cx and DyFe10.5Mo1.5Cx is enhanced. As to the nitrides, the results indicate that YFe10.5Mo1.5CxNy possess a higher Curie temperature and a larger saturation magnetization than YFe10.5Mo1.5Ny, which is of significance in the technical applications.

Weihua Mao

[1] Z. Hu,et al. NEUTRON DIFFRACTION AND MAGNETIC STUDIES OF RFE12-XTXCY (R=Y,ER; T=V,TI,MO) ALLOYS , 1996 .

[2] Y. Seyama,et al. Crystal structures and magnetic properties of Nd(Fe,M)12Cx and Nd(Fe,M)12CxNy (M = Mo, Ti, V) prepared by cast method , 1996 .

[3] Yingchang Yang,et al. Neutron diffraction study of Y(TiFeC)12 , 1995 .

[4] J. Soubeyroux,et al. On the new interstitial RFe10.5Mo1.5Cx series (R=rare earth metal): synthesis and magnetic properties , 1995 .

[5] J. Soubeyroux,et al. R2Fe17 and RM12 carbide and carbonitride synthesis from heavy hydrocarbon compounds , 1994 .

[6] Chin Lin,et al. Magnetic properties of RFe10Si2Cx prepared by arc-melting (R = Y, Gd, Dy, and Er) , 1994 .

[7] Y. P. Li,et al. Gas-phase interstitially modified intermetallics R(Fe11Ti) Z1- delta . II. 3d magnetization of the compounds Y(Fe11Ti) Z1- delta (Z=N, C) , 1992 .

[8] J. Coey,et al. Gas-phase interstitially modified intermetallics R(Fe11Ti)Z1- delta . I. Magnetic properties of the series R(Fe11Ti)C1- delta : R=Y, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu , 1992 .

[9] E. Singleton,et al. Rare-earth transition metal carbides , 1992, 1992. Digests of Intermag. International Magnetics Conference.

[10] J. Thompson,et al. The magnetic anisotropy of cobalt , 1954, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.