Phys. Rev. B 80, 014522 (2009) [4 pages]Structural phase transition in Ba(Fe0.973Cr0.027)2As2 single crystalsReceived 23 June 2009; revised 12 July 2009; published 27 July 2009 We present thermodynamic, structural, and transport measurements on Ba(Fe0.973Cr0.027)2As2 single crystals. All measurements reveal sharp anomalies at ∼112 K. Single crystal x-ray diffraction identifies the structural transition as a first order, from the high-temperature tetragonal I4/mmm to the low-temperature orthorhombic Fmmm structure, in contrast to an earlier report. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.80.014522
DOI:
10.1103/PhysRevB.80.014522
PACS:
61.50.Ks, 65.40.Ba, 65.40.De, 72.15.−v
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