Synthesis, structure, magnetic and transport properties of LnFeSb3 (Ln = Pr, Nd, Sm, Gd, and Tb) – tuning of anisotropic long-range magnetic order as a function of Ln

W. Adam Phelan; Giang V. Nguyen; Amar B. Karki; David P. Young; Julia Y. Chan

doi:10.1039/C0DT00058B

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Synthesis, structure, magnetic and transport properties of LnFeSb₃ (Ln = Pr, Nd, Sm, Gd, and Tb) – tuning of anisotropic long-range magnetic order as a function of Ln†

W. Adam Phelan,^a Giang V. Nguyen,^a Amar B. Karki,^b David P. Young^b and Julia Y. Chan*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA, USA

^b Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA, USA

Abstract

Single crystals of LnFeSb₃ (Ln = Pr, Nd, Sm, Gd, and Tb) have been grown from excess Sb flux. The crystal structure consists of _∞²[FeSb₂] octahedra separated by layers of Ln atoms and nearly square planar nets of _∞²[Sb₂]. These compounds are metallic and display anisotropic magnetic properties. Long-range antiferromagnetic order is observed in the Sm, Gd, and Tb samples when the magnetic field is applied along the crystallographic a-axis. Evidence of magnetic ordering in all the samples is observed for the field applied parallel to the layers. The magnetic properties are well-described by considering only the magnetic interactions between the Ln 4f moments, with no contribution from the Fe sublattice. Herein, we report the crystal growth, structure, magnetization, transport, and chemical stabilities of the title compounds.

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Supplementary files

Crystal structure data TXT (96K)

Article information

DOI: https://doi.org/10.1039/C0DT00058B
Article type: Paper
Submitted: 03 Mar 2010
Accepted: 21 Apr 2010
First published: 09 Jun 2010

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Dalton Trans., 2010,39, 6403-6409

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Synthesis, structure, magnetic and transport properties of LnFeSb₃ (Ln = Pr, Nd, Sm, Gd, and Tb) – tuning of anisotropic long-range magnetic order as a function of Ln

W. A. Phelan, G. V. Nguyen, A. B. Karki, D. P. Young and J. Y. Chan, Dalton Trans., 2010, 39, 6403 DOI: 10.1039/C0DT00058B

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Dalton Transactions