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Title: Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal

Abstract

Chromium (Cr) forms a solid solution with iron (Fe) lattice when doped in core-shell iron -iron oxide nanocluster (NC) and shows a mixed phase of sigma (σ) FeCr and bcc Fe. The Cr dopant affects heavily the magnetization and magnetic reversal process, and causes the hysteresis loop to shrink near the zero field axis. Dramatic transformation happens from dipolar interaction (0 at. % Cr) to strong exchange interaction (8 at. % of Cr) is confirmed from the Henkel plot and delta M plot, and is explained by a water-melon model of core-shell NC system.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1091456
Report Number(s):
PNNL-SA-91331
44713; KP1704020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Nanoscale, 5(17):7872-7881
Additional Journal Information:
Journal Name: Nanoscale, 5(17):7872-7881
Country of Publication:
United States
Language:
English
Subject:
Environmental Molecular Sciences Laboratory

Citation Formats

Kaur, Maninder, Dai, Qilin, Bowden, Mark E., Engelhard, Mark H., Wu, Yaqiao, Tang, Jinke, and Qiang, You. Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal. United States: N. p., 2013. Web. doi:10.1039/C3NR02247A.
Kaur, Maninder, Dai, Qilin, Bowden, Mark E., Engelhard, Mark H., Wu, Yaqiao, Tang, Jinke, & Qiang, You. Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal. United States. https://doi.org/10.1039/C3NR02247A
Kaur, Maninder, Dai, Qilin, Bowden, Mark E., Engelhard, Mark H., Wu, Yaqiao, Tang, Jinke, and Qiang, You. 2013. "Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal". United States. https://doi.org/10.1039/C3NR02247A.
@article{osti_1091456,
title = {Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal},
author = {Kaur, Maninder and Dai, Qilin and Bowden, Mark E. and Engelhard, Mark H. and Wu, Yaqiao and Tang, Jinke and Qiang, You},
abstractNote = {Chromium (Cr) forms a solid solution with iron (Fe) lattice when doped in core-shell iron -iron oxide nanocluster (NC) and shows a mixed phase of sigma (σ) FeCr and bcc Fe. The Cr dopant affects heavily the magnetization and magnetic reversal process, and causes the hysteresis loop to shrink near the zero field axis. Dramatic transformation happens from dipolar interaction (0 at. % Cr) to strong exchange interaction (8 at. % of Cr) is confirmed from the Henkel plot and delta M plot, and is explained by a water-melon model of core-shell NC system.},
doi = {10.1039/C3NR02247A},
url = {https://www.osti.gov/biblio/1091456}, journal = {Nanoscale, 5(17):7872-7881},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 26 00:00:00 EDT 2013},
month = {Wed Jun 26 00:00:00 EDT 2013}
}