Open AccessStructure and electromagnetic transport properties of compound NdNi2Ge2
Author(s) -
于洪飞,
张鲁山,
吴小会,
郭永权
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.107306
Subject(s) - intermetallic , tetragonal crystal system , materials science , lattice constant , crystal structure , rietveld refinement , magnetic moment , curie–weiss law , condensed matter physics , crystallography , magnetic susceptibility , electrical resistivity and conductivity , curie temperature , atom (system on chip) , diffraction , ferromagnetism , physics , chemistry , alloy , metallurgy , optics , quantum mechanics , computer science , embedded system
The sample of compound NdNi2Ge2 is prepared by arc melting. The crystal structure is analyzed using powder X-ray diffraction and refined with Rietveld is method. It is shown that NdNi2Ge2 intermetallic compound crystallizes into a tetragonal structure with space group of I/4mmm and its lattice constant is a=4.120(1),c=9.835(0), Z=2. Nd atoms occupy 2a positions, Ni atoms 4d positions and Ge atom 4e positions. NdNi2Ge2 intermetallic compound has a Curie-Weiss constant of 25.8 and Curie-Weiss temperature of 6.24 K. The effective magnetic moment is 3.69B, which is very close to that of Nd3+. It implies that the magnetic moment originates mainly from Nd3+ ion. The resistivity varies from 0.3 m1.1 m. Fitting results show that this intermetallic compound is semimetal.