Nonconventional magnetic phenomena in neodymium thin film
Abstract
Neodymium is a remarkable active component in numerous magnetic alloys that are used in various applications. However, the application of a bare neodymium thin film is limited due to the lack of information about its electrical and magnetic properties. We report a synergistic study of an Nd thin film using experimental and theoretical techniques of polarized neutron reflectometry, magnetoresistance measurement, and density functional theory. Unlike bulk Nd, the thin film specimen is a very poor electrical conductor. Also, as grown, the thin film on silicon substrate does not exhibit any magnetism in a zero field. However, moderate in-plane field application of H = 1.2T tends to induce weak magnetism in the system at a low temperature of T< 18 K, which coincides with an unusual cross-over behavior in magnetoresistance. The study provides important insight in the physical characteristics of the Nd thin film that are atypical for a magnetic system.
- Authors:
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1669725
- Alternate Identifier(s):
- OSTI ID: 1818955
- Grant/Contract Number:
- SC0014461; AC05-00OR22725
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Research
- Additional Journal Information:
- Journal Name: Physical Review Research Journal Volume: 2 Journal Issue: 4; Journal ID: ISSN 2643-1564
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; electrical properties; electronic structure; magnetic order; magnetotransport
Citation Formats
Yumnam, G., Guo, J., Chen, Y., Lauter, V., and Singh, D. K. Nonconventional magnetic phenomena in neodymium thin film. United States: N. p., 2020.
Web. doi:10.1103/PhysRevResearch.2.043018.
Yumnam, G., Guo, J., Chen, Y., Lauter, V., & Singh, D. K. Nonconventional magnetic phenomena in neodymium thin film. United States. https://doi.org/10.1103/PhysRevResearch.2.043018
Yumnam, G., Guo, J., Chen, Y., Lauter, V., and Singh, D. K. Fri .
"Nonconventional magnetic phenomena in neodymium thin film". United States. https://doi.org/10.1103/PhysRevResearch.2.043018.
@article{osti_1669725,
title = {Nonconventional magnetic phenomena in neodymium thin film},
author = {Yumnam, G. and Guo, J. and Chen, Y. and Lauter, V. and Singh, D. K.},
abstractNote = {Neodymium is a remarkable active component in numerous magnetic alloys that are used in various applications. However, the application of a bare neodymium thin film is limited due to the lack of information about its electrical and magnetic properties. We report a synergistic study of an Nd thin film using experimental and theoretical techniques of polarized neutron reflectometry, magnetoresistance measurement, and density functional theory. Unlike bulk Nd, the thin film specimen is a very poor electrical conductor. Also, as grown, the thin film on silicon substrate does not exhibit any magnetism in a zero field. However, moderate in-plane field application of H = 1.2T tends to induce weak magnetism in the system at a low temperature of T< 18 K, which coincides with an unusual cross-over behavior in magnetoresistance. The study provides important insight in the physical characteristics of the Nd thin film that are atypical for a magnetic system.},
doi = {10.1103/PhysRevResearch.2.043018},
journal = {Physical Review Research},
number = 4,
volume = 2,
place = {United States},
year = {2020},
month = {10}
}
https://doi.org/10.1103/PhysRevResearch.2.043018
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