Structural and magnetic phase transitions in EuTi1-xNbxO3
Abstract
Here, we investigate the structural and magnetic phase transitions in EuTi1-xNbxO3 (0≤x≤0.3) with synchrotron powder x-ray diffraction, resonant ultrasound spectroscopy, and magnetization measurements. Upon Nb doping, the Pm$$\bar{3}$$m ↔ I4/mcm structural transition shifts to higher temperatures and the room temperature lattice parameter increases while the magnitude of the octahedral tilting decreases. In addition, Nb substitution for Ti destabilizes the antiferromagnetic ground state of the parent compound and long-range ferromagnetic order is observed in the samples with x≥0.1. Moreover, the structural transition in pure and doped compounds is marked by a dramatic step-like softening of the elastic moduli near TS, which resembles that of SrTiO3 and can be adequately modeled using the Landau free energy model employing the same coupling between strain and octahedral tilting order parameter as previously used to model SrTiO3.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1265813
- Alternate Identifier(s):
- OSTI ID: 1206797
- Grant/Contract Number:
- AC05-00OR22725; AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 2; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Li, Ling, Morris, James R., Koehler, Michael R., Dun, Zhiling, Zhou, Haidong, Yan, Jiaqiang, Mandrus, David, and Keppens, Veerle. Structural and magnetic phase transitions in EuTi1-xNbxO3. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.92.024109.
Li, Ling, Morris, James R., Koehler, Michael R., Dun, Zhiling, Zhou, Haidong, Yan, Jiaqiang, Mandrus, David, & Keppens, Veerle. Structural and magnetic phase transitions in EuTi1-xNbxO3. United States. https://doi.org/10.1103/PhysRevB.92.024109
Li, Ling, Morris, James R., Koehler, Michael R., Dun, Zhiling, Zhou, Haidong, Yan, Jiaqiang, Mandrus, David, and Keppens, Veerle. Thu .
"Structural and magnetic phase transitions in EuTi1-xNbxO3". United States. https://doi.org/10.1103/PhysRevB.92.024109. https://www.osti.gov/servlets/purl/1265813.
@article{osti_1265813,
title = {Structural and magnetic phase transitions in EuTi1-xNbxO3},
author = {Li, Ling and Morris, James R. and Koehler, Michael R. and Dun, Zhiling and Zhou, Haidong and Yan, Jiaqiang and Mandrus, David and Keppens, Veerle},
abstractNote = {Here, we investigate the structural and magnetic phase transitions in EuTi1-xNbxO3 (0≤x≤0.3) with synchrotron powder x-ray diffraction, resonant ultrasound spectroscopy, and magnetization measurements. Upon Nb doping, the Pm$\bar{3}$m ↔ I4/mcm structural transition shifts to higher temperatures and the room temperature lattice parameter increases while the magnitude of the octahedral tilting decreases. In addition, Nb substitution for Ti destabilizes the antiferromagnetic ground state of the parent compound and long-range ferromagnetic order is observed in the samples with x≥0.1. Moreover, the structural transition in pure and doped compounds is marked by a dramatic step-like softening of the elastic moduli near TS, which resembles that of SrTiO3 and can be adequately modeled using the Landau free energy model employing the same coupling between strain and octahedral tilting order parameter as previously used to model SrTiO3.},
doi = {10.1103/PhysRevB.92.024109},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 2,
volume = 92,
place = {United States},
year = {Thu Jul 30 00:00:00 EDT 2015},
month = {Thu Jul 30 00:00:00 EDT 2015}
}
Web of Science
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