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Title: Valence instability across the magnetostructural transition in USb2

Abstract

We have performed pressure-dependent x-ray diffraction and resonant x-ray emission spectroscopy experiments on USb2 to further characterize the antiferromagnetic-ferromagnetic transition occurring near 8 GPa. We have found the magnetic transition coincides with a tetragonal to orthorhombic transition resulting in a 17% volume collapse as well as a transient f-occupation enhancement. Compared to UAs2 and UAsS, USb2 shows a reduced bulk modulus and transition pressure and an increased volume collapse at the structural transition. Except for an enhancement across the transition region, the f occupancy decreases steadily from 1.96 to 1.75.

Authors:
 [1];  [2];  [2];  [2];  [2];  [3];  [3];  [4];  [5];  [3]
  1. ORNL
  2. HPCAT Geophysical Lab, Argonne, IL
  3. Lawrence Livermore National Laboratory (LLNL)
  4. National Institute of Standards and Technology (NIST), Gaithersburg, MD
  5. UC Davis, Davis, CA
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1606746
Alternate Identifier(s):
OSTI ID: 1599686
Grant/Contract Number:  
AC05-00OR22725; AC52- 07NA27344; AC02-06CH11357; FG02-13ER41967
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 8
Country of Publication:
United States
Language:
English

Citation Formats

Brubaker, Zach, Xiao, Y, Chow, P, Kenney-Benson, Curtis, Smith, J, Cynn, H, Reynolds, C, Butch, Nicholas P., Zieve, Rena, and Jeffries, J. R. Valence instability across the magnetostructural transition in USb2. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.085123.
Brubaker, Zach, Xiao, Y, Chow, P, Kenney-Benson, Curtis, Smith, J, Cynn, H, Reynolds, C, Butch, Nicholas P., Zieve, Rena, & Jeffries, J. R. Valence instability across the magnetostructural transition in USb2. United States. doi:10.1103/PhysRevB.101.085123.
Brubaker, Zach, Xiao, Y, Chow, P, Kenney-Benson, Curtis, Smith, J, Cynn, H, Reynolds, C, Butch, Nicholas P., Zieve, Rena, and Jeffries, J. R. Sat . "Valence instability across the magnetostructural transition in USb2". United States. doi:10.1103/PhysRevB.101.085123.
@article{osti_1606746,
title = {Valence instability across the magnetostructural transition in USb2},
author = {Brubaker, Zach and Xiao, Y and Chow, P and Kenney-Benson, Curtis and Smith, J and Cynn, H and Reynolds, C and Butch, Nicholas P. and Zieve, Rena and Jeffries, J. R.},
abstractNote = {We have performed pressure-dependent x-ray diffraction and resonant x-ray emission spectroscopy experiments on USb2 to further characterize the antiferromagnetic-ferromagnetic transition occurring near 8 GPa. We have found the magnetic transition coincides with a tetragonal to orthorhombic transition resulting in a 17% volume collapse as well as a transient f-occupation enhancement. Compared to UAs2 and UAsS, USb2 shows a reduced bulk modulus and transition pressure and an increased volume collapse at the structural transition. Except for an enhancement across the transition region, the f occupancy decreases steadily from 1.96 to 1.75.},
doi = {10.1103/PhysRevB.101.085123},
journal = {Physical Review B},
number = 8,
volume = 101,
place = {United States},
year = {2020},
month = {2}
}

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