Crystal structure and superconducting properties of KSr2Nb3O10

We performed X-ray diffraction (XRD) and DC magnetic susceptibility measurements to elucidate the crystal structure and superconducting properties of KSr2Nb3O10. From the diffraction pattern indexing, it was found that KSr2Nb3O10 crystallizes with monoclinic symmetry, space group P21/m(11). We succe...

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Published inPhysica. B, Condensed matter Vol. 536; pp. 830 - 832
Main Authors Kawaguchi, T., Horigane, K., Itoh, Y., Kobayashi, K., Horie, R., Kambe, T., Akimitsu, J.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2018
Subjects
Crystal structure
Intercalation
Nb-based compound
Superconductivity
Nb-based compound
Intercalation
Superconductivity
Crystal structure
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Summary:We performed X-ray diffraction (XRD) and DC magnetic susceptibility measurements to elucidate the crystal structure and superconducting properties of KSr2Nb3O10. From the diffraction pattern indexing, it was found that KSr2Nb3O10 crystallizes with monoclinic symmetry, space group P21/m(11). We succeeded in preparing high temperature (HT) and low temperature (LT) phases of KSr2Nb3O10 powder samples synthesized by a conventional solid state reaction and an ion-exchange reaction, respectively. Superconductivity was observed at 4K by Li intercalation and it was found that the superconducting volume fraction of the LT phase (~ 1.4%) is clearly larger than that of the HT phase (0.07%).
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2017.09.060