Electrical quadrupole interaction in RNinBnC (n = 1, 2) compounds as obtained from Fe-57 Mossbauer spectroscopy, (c '/a)-ratio and the occurrence of superconductivity

Authors
Baggio-Saitovitch, EM Sanchez, DR Micklitz, H
Citation
Em. Baggio-saitovitch et al., Electrical quadrupole interaction in RNinBnC (n = 1, 2) compounds as obtained from Fe-57 Mossbauer spectroscopy, (c '/a)-ratio and the occurrence of superconductivity, PHYSICA C, 341, 2000, pp. 703-706
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
2
Pages
703 - 706
Database
ISI
SICI code
0921-4534(200011)341:<703:EQIIR(>2.0.ZU;2-3
Abstract
Fe-57 Mossbauer spectra of RNiBC (R=Gd, Tb, Dy, Ho, and Er) doped with 0.5 at % 57Fe show a main quadrupole doublet \DeltaE(Q)\ which is R dependent. The values of \DeltaE(Q)\ linearly depend on the parameter (c'/a), with c' being the distance of R-C layers between which the Ni-2-B-2 layer is sandwi ched and a being the lattice parameter in the basal plane. A correlation be tween T-c and (c'/a) is also observed indicating that this structural param eter is important for the occurrence of superconductivity in this class of compounds.