Structural and antiferromagnetic properties of Ba(Fe1-x-yCoxRhy)2As2 compounds

Kim, M. G.; Heitmann, T. W.; Mulcahy, Sean R.; Bourret-Courchesne, E. D.; Birgeneau, R. J.

doi:10.1103/PhysRevB.93.094520

Title: Structural and antiferromagnetic properties of $Ba ({Fe}_{1 - x - y} {Co}_{x} {Rh}_{y})_{2} {As}_{2}$ compounds

Journal Article · 23 March 2016 · Physical Review B

DOI: https://doi.org/10.1103/PhysRevB.93.094520 · OSTI ID:1466693

Kim, M. G. ^[1]; Heitmann, T. W. ^[2]; Mulcahy, Sean R. ^[3]; Bourret-Courchesne, E. D. ^[1]; Birgeneau, R. J. ^[4]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Univ. of Missouri, Columbia, MO (United States)
Univ. of California, Berkeley, CA (United States); Western Washington Univ., Bellingham, WA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)

Here, we present a systematic investigation of the electrical, structural, and antiferromagnetic properties for the series of Ba(Fe_1-x-yCoxRh_y)₂As₂ compounds with fixed x≈0.027 and 0≤y≤0.035. We compare our results for the Co-Rh doped Ba(Fe_1-x-yCo_xRh_y)₂As₂ compounds with the Co doped Ba(Fe_1-xCo_x)₂As₂ compounds. We demonstrate that the electrical, structural, antiferromagnetic, and superconducting properties of the Co-Rh doped compounds are similar to the properties of the Co doped compounds. We find that the overall behaviors of Ba(Fe_1-x-yCo_xRh_y)₂As₂ and Ba(Fe_1-xCo_x)₂As₂ compounds are very similar when the total number of extra electrons per Fe/TM (TM=transition metal) site is considered, which is consistent with the rigid band model. Despite the similarity, we find that the details of the transitions, for example, the temperature difference between the structural and antiferromagnetic transition temperatures and the incommensurability of the antiferromangetic peaks, are different between Ba(Fe_1-x-yCo_xRh_y)₂As₂ and Ba(Fe_1-xCo_x)₂As₂ compounds.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1466693

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 9 Vol. 93; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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