Effect of the isoelectronic substitution of Sb for As on the magnetic and structural properties of LaFe(As1−xSbx)O

2011/09/30 by S. J. E. Carlsson, Sandra Carlsson, F. Levy-Bertrand +17
Chemistry · Materials Science · Physics and Astronomy · #Antiferromagnetism #Chemistry #Computer science #Condensed matter physics #Crystal structure #Crystallite #Crystallography #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Magnetic moment #Materials science #Neutron diffraction #Order (exchange) #Physics #Rare-earth and actinide compounds #Substitution (logic) #cond-mat.mtrl-sci #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.84.104523

published as Phys. Rev. B 84, 104523 (2011) · 21 pages, 6 figures

openalex publication_date 2011/09/30 · arxiv created 2011/10/12 · arxiv updated 2011/10/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The antiferromagnetic (AFM) order and structural distortion in the LaFe(As_1\ensuremath-xSb_x)O system have been investigated by neutron powder diffraction and physical properties measurements. Polycrystalline samples of LaFe(As_1\ensuremath-xSb_x)O (x 0.5) were prepared using solid state synthesis at ambient and high pressure. We find that the isoelectronic substitution of Sb for As decreases the structural and magnetic transition temperatures, but, contrary to the effects of phosphorus substitution, superconductivity is not induced. Instead a slight increase in the Fe-magnetic moment is observed.

Citations

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