Pressure-Induced Effects on the Structure of the FeSe Superconductor

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dc.creatorMillican, Jasmine N.
dc.creatorPhelan, Daniel
dc.creatorThomas, Evan L.
dc.creatorLeao, Juscelino B.
dc.creatorCarpenter, Elisabeth
dc.date2009-02-05
dc.date2009-04-01
dc.date.accessioned2026-07-07T12:58:25Z
dc.date.available2026-07-07T12:58:25Z
dc.descriptionA polycrystalline sample of FeSe, which adopts the tetragonal PbO-type structure (P4/nmm) at room temperature, has been prepared using solid state reaction. We have investigated pressure-induced structural changes in tetragonal FeSe at varying hydrostatic pressures up to 0.6 GPa in the orthorhombic (T = 50 K) and tetragonal (T = 190 K) phases using high resolution neutron powder diffraction. We report that the structure is quite compressible with a Bulk modulus around 31 GPa to 33 GPa and that the pressure response is anisotropic with a larger compressibility along the c-axis. Key bond angles of the SeFe4 pyramids and FeSe4 tetrahedra are also determined as a function of pressure.
dc.identifierhttps://arxiv.org/abs/0902.0971
dc.identifierhttp://arxiv.org/abs/0902.0971
dc.identifierSolid State Communications 149 (2009) 707-710.
dc.identifierdoi:10.1016/j.ssc.2009.02.011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225233
dc.subjectSuperconductivity
dc.titlePressure-Induced Effects on the Structure of the FeSe Superconductor
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