Open AccessStructure transition and magnetic properties of ((Nd1－xErx)2Co15.5V1.5 compounds
Author(s) -
Baoyu Liu,
Liu Guo-dong,
Guangheng Wu,
Yang Fu-ming
Publication year - 2004
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.1903
Subject(s) - materials science , curie temperature , lattice constant , anisotropy , condensed matter physics , magnetization , saturation (graph theory) , formula unit , content (measure theory) , analytical chemistry (journal) , diffraction , nuclear magnetic resonance , crystal structure , crystallography , chemistry , magnetic field , ferromagnetism , physics , optics , mathematical analysis , mathematics , chromatography , quantum mechanics , combinatorics
Structure and magnetic properties of (Nd1-xErx)2Co15.5V1.5compounds have been investigated by means of x-ray diffraction and magnetic measurements. The results obtained show that the (Nd1-xErx)2Co15.5V1.5 compounds crystallize in the Th2Zn17type structure for lower Er content(x0.5). The two structures coexist in the samples with x=0.4 and 0.5 The lattice constants a and c, and the unit cell volumeV show a decreasing tendency with increasing Er content in both structures. With increasing Er content, at room temperature, the anisotropy of the (Nd1-xErx)2Co15.5V1.5 compounds changes from the easycone type for low Er content(x0.5). The spin reorientation transition is observed for the compounds with x=0.0—0.5, and the spin reorientation temperature Tsr shows a decreasing tendency with increasing Er content. In addition, the Curie temperature TC and saturation magnetization Ms also decrease monotonically with the Er substitution for Nd in (Nd1-xErx)2Co15.5V1.5 compounds.
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