Tuning the giant magnetoelastic transition in Ba3BiIr2O9 and Ba3BiRu2O9

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dc.contributor.authorHuang, Zen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorKnight, KSen_AU
dc.contributor.authorZhou, Qen_AU
dc.contributor.authorLing, CDen_AU
dc.date.accessioned2016-08-26T05:15:16Zen_AU
dc.date.available2016-08-26T05:15:16Zen_AU
dc.date.issued2014-06-17en_AU
dc.date.statistics2016-08-26en_AU
dc.description.abstractWe have experimentally investigated the effects of pressure on the magnetoelastic transitions associated with the opening of spin-gaps in Ba3BiIr2O9 and Ba3BiRu2O9. For both compounds, reducing the unit cell volume by either external physical and internal chemical pressure was found to reduce the temperature T* of the transition and, to a lesser extent, the magnitude of the associated negative thermal volume expansion. The results yield the latent heat associated with the transitions, −3.34(3) × 102 J mol−1 for Ba3BiIr2O9 and −7.1(5) × 102 J mol−1 for Ba3BiRu2O9. The transition in Ba3BiRu2O9 is significantly more robust than in Ba3BiIr2O9, requiring an order of magnitude higher pressures to achieve the same reduction in T*. The differing responses of the two compounds points to differences between the 4d and 5d metals and hence to the importance of spin-orbit coupling, which is expected to be much stronger in the Ir compound. © 2014, IOP Publishing Ltd.en_AU
dc.identifier.articlenumber276003en_AU
dc.identifier.citationHuang, Z., Avdeev, M., Kennedy, B. J., Knight, K. S., Zhou, Q., & Ling, C. D. (2014). Tuning the giant magnetoelastic transition in Ba3BiIr2O9 and Ba3BiRu2O9. Journal of Physics: Condensed Matter, 26(27), 276003. doi:10.1088/0953-8984/26/27/276003en_AU
dc.identifier.govdoc7026en_AU
dc.identifier.issn1361-648Xen_AU
dc.identifier.issue27en_AU
dc.identifier.journaltitleJournal of Physics: Condensed Matteren_AU
dc.identifier.urihttp://dx.doi.org/10.1088/0953-8984/26/27/276003en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7383en_AU
dc.identifier.volume26en_AU
dc.language.isoenen_AU
dc.publisherIOP Scienceen_AU
dc.subjectPressure range mega pa 10-100en_AU
dc.subjectNeutron diffractionen_AU
dc.subjectSpinen_AU
dc.subjectMagnetic fieldsen_AU
dc.subjectChemical propertiesen_AU
dc.subjectMetalsen_AU
dc.titleTuning the giant magnetoelastic transition in Ba3BiIr2O9 and Ba3BiRu2O9en_AU
dc.typeJournal Articleen_AU
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