The crystal structure of SmFeAs(O0.93F0.07) has been investigated under high pressure (up to ∼9 GPa) by means of synchrotron powder diffraction analysis followed by Rietveld refinement. The bulk modulus was calculated (K0 = 103 GPa) using a 3rd order Birch-Murnaghan equation of state and resulted in quite good agreement with theoretical calculations reported for LaFeAsO. The linear compressibilities βa and βc are 2.11(4) and 4.56(7) × 10-3 GPa-1, respectively.
The bulk modulus of SmFeAs(O(0.93)F(0.07)) / A. Martinelli, M. Ferrett, A. Palenzona, M. Merlini. - In: PHYSICA. C, SUPERCONDUCTIVITY. - ISSN 0921-4534. - 469:13(2009), pp. 782-784. [10.1016/j.physc.2009.04.011]
The bulk modulus of SmFeAs(O(0.93)F(0.07))
M. MerliniUltimo
2009
Abstract
The crystal structure of SmFeAs(O0.93F0.07) has been investigated under high pressure (up to ∼9 GPa) by means of synchrotron powder diffraction analysis followed by Rietveld refinement. The bulk modulus was calculated (K0 = 103 GPa) using a 3rd order Birch-Murnaghan equation of state and resulted in quite good agreement with theoretical calculations reported for LaFeAsO. The linear compressibilities βa and βc are 2.11(4) and 4.56(7) × 10-3 GPa-1, respectively.
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