Tungsten-encapsulated gadolinium nanoislands with enhanced magnetocaloric response
Abstract
Here, we report a method for growing chemically pure, oxide-free, air-stable Gd nanoislands with enhanced magnetic properties. These nanoislands are grown by solid-state dewetting and are fully encapsulated in tungsten such that they remain stable in ambient environments. They display good crystalline properties with hexagonally close-packed crystal structure and strong preferential orientation. We show that the choice of substrate strongly affects their shape, crystal orientation, and magnetic properties. The temperature-dependent magnetic coercivity and remanence of the Gd islands can vary by as much as a factor of three depending on the substrate used. The magneto- caloric properties of Gd islands grown on a sapphire substrate exceed those of high-quality Gd thin films.
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Reed College, Portland, OR (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1395145
- Alternate Identifier(s):
- OSTI ID: 1368414
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 111; Journal Issue: 1; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; gadolinium; magnetic entropy; magnetocaloric effect; nanoislands; nanostructuring
Citation Formats
Logan, Jonathan M., Rosenmann, Daniel, Sangpo, Tenzin, Holt, Martin V., Fuesz, Peter, and McNulty, Ian. Tungsten-encapsulated gadolinium nanoislands with enhanced magnetocaloric response. United States: N. p., 2017.
Web. doi:10.1063/1.4990388.
Logan, Jonathan M., Rosenmann, Daniel, Sangpo, Tenzin, Holt, Martin V., Fuesz, Peter, & McNulty, Ian. Tungsten-encapsulated gadolinium nanoislands with enhanced magnetocaloric response. United States. https://doi.org/10.1063/1.4990388
Logan, Jonathan M., Rosenmann, Daniel, Sangpo, Tenzin, Holt, Martin V., Fuesz, Peter, and McNulty, Ian. Mon .
"Tungsten-encapsulated gadolinium nanoislands with enhanced magnetocaloric response". United States. https://doi.org/10.1063/1.4990388. https://www.osti.gov/servlets/purl/1395145.
@article{osti_1395145,
title = {Tungsten-encapsulated gadolinium nanoislands with enhanced magnetocaloric response},
author = {Logan, Jonathan M. and Rosenmann, Daniel and Sangpo, Tenzin and Holt, Martin V. and Fuesz, Peter and McNulty, Ian},
abstractNote = {Here, we report a method for growing chemically pure, oxide-free, air-stable Gd nanoislands with enhanced magnetic properties. These nanoislands are grown by solid-state dewetting and are fully encapsulated in tungsten such that they remain stable in ambient environments. They display good crystalline properties with hexagonally close-packed crystal structure and strong preferential orientation. We show that the choice of substrate strongly affects their shape, crystal orientation, and magnetic properties. The temperature-dependent magnetic coercivity and remanence of the Gd islands can vary by as much as a factor of three depending on the substrate used. The magneto- caloric properties of Gd islands grown on a sapphire substrate exceed those of high-quality Gd thin films.},
doi = {10.1063/1.4990388},
journal = {Applied Physics Letters},
number = 1,
volume = 111,
place = {United States},
year = {Mon Jul 03 00:00:00 EDT 2017},
month = {Mon Jul 03 00:00:00 EDT 2017}
}
Web of Science
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