Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Tuning the Crystalline Electric Field and Magnetic Anisotropy along the CeCuBi2-xSbx Series

Published

Author(s)

G. S. Freitas, M. M. Piva, R. Grossi, C. B. Jesus, J. C. Souza, D. S. Christovam, Jr. Oliveira, Juscelino Leao, C. Adriano, Jeffrey W. Lynn, P. G. Pagliuso

Abstract

We have performed X-ray powder diffraction, magnetization, electrical resistivity, heat capacity and inelastic neutron scattering (INS) to investigate the physical properties of the intermetallic series of compounds CeCuBi2−xSbx. These compounds crystallize in a tetragonal structure with space group P4/nmm and present antiferromagnetic transition temperatures ranging from 3.6 K to 16 K. Remarkably, the magnetization easy axis changed along the series, which is closely related to the variations of the tetragonal crystalline electric field (CEF) parameters. This evolution was analyzed using a mean field model, which included an anisotropic nearest-neighbor interactions and the tetragonal CEF Hamiltonian. We obtained the CEF parameters by fitting the magnetic susceptibility data with the constraints given by the INS measurements. More broadly, we discuss how this CEF evolution can affect the Kondo physics and the search for a superconducting state in this family.
Citation
Physical Review B
Volume
102
Issue
15

Keywords

Crystal Field Levels, inelastic neutron scattering, Intermetallic CeSuBi2-xSbx, bulk magnetic data, Antiferromagnetic Order, Kondo Screening

Citation

Freitas, G. , Piva, M. , Grossi, R. , Jesus, C. , Souza, J. , Christovam, D. , Oliveira, J. , Leao, J. , Adriano, C. , Lynn, J. and Pagliuso, P. (2020), Tuning the Crystalline Electric Field and Magnetic Anisotropy along the CeCuBi<sub>2-x</sub>Sb<sub>x</sub> Series, Physical Review B (Accessed April 16, 2024)
Created October 19, 2020, Updated September 20, 2021