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dc.contributor.authorCOEY, JOHN MICHAEL DAVID
dc.date.accessioned2009-08-11T14:09:41Z
dc.date.available2009-08-11T14:09:41Z
dc.date.issued1974
dc.date.submitted1974en
dc.identifier.citationJ M D Coey and R Brusetti 'Heat capacity of nichel sulfide and its semimetal-metal transition' in Physical Review B, 11, (2), 1974, pp 671-677en
dc.identifier.otherYen
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/31628
dc.descriptionPUBLISHEDen
dc.description.abstractHeat-capacity measurements have been made from 5 to 330 K on NiS which shows a nonmetal-metal transition at 265 K, and on Ni0.95S which is metallic at all temperatures. The low-temperature data yield electronic specific-heat coefficients of 0.9 0.2 and 6.2 0.4 mJ/mole K2 and characteristic temperatures of 373 and 336 K, respectively. We deduce that NiS is a semimetal, not a semiconductor, at low temperatures. Of the entropy of transition, 5.32 J/mole K, 25% is electronic and 75% is due to the lattice. Any magnetic contribution is small compared to Rln(2S+1). The entropy of transition is proportional to the transition temperature Tt for a series of samples with 105<315 K. A strong electron-phonon interaction is indicated. Structure in the specific-heat anomaly of tiny crystals (1mg) is ascribed to the presence of domains of dimensions 100 m with slightly different stoichiometries.en
dc.format.extent671-677.en
dc.format.extent1171292 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseries11en
dc.relation.ispartofseries2en
dc.rightsYen
dc.subjectPhysicsen
dc.titleHeat capacity of nichel sulfide and its semimetal-metal transitionen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jcoey


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