Structural phase transition in Ba(Fe0.973Cr0.027)(2)As-2 single crystals

TitleStructural phase transition in Ba(Fe0.973Cr0.027)(2)As-2 single crystals
Publication TypeJournal Article
Year of Publication2009
AuthorsBud'ko SL, Nandi S, Ni N, Thaler A, Kreyssig A, Kracher A, Yan JQ, Goldman AI, Canfield PC
Journal TitlePhysical Review B
Date Published07/01
ISBN Number1098-0121
Accession NumberISI:000268617100113
Keywordsbarium compounds, chromium compounds, electrical resistivity, hall effect, iron compounds, magnetic susceptibility, magnetic transition temperature, space groups, thermodynamics, x-ray diffraction

We present thermodynamic, structural, and transport measurements on Ba(Fe0.973Cr0.027)(2)As-2 single crystals. All measurements reveal sharp anomalies at similar to 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.

URL<Go to ISI>://000268617100113