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Title: Exchange bias and exchange spring effects in Fe/CrN bilayers

Abstract

We studied exchange bias and exchange spring effects in magnetic bilayer thin films of Fe and CrN grown by molecular beam epitaxy. First, the relationships between exchange bias, coercivity, and blocking temperature and the Fe and CrN layers thicknesses are studied. Second, the exchange spring effect is observed and studied in all samples. The exchange spring breaks free at critical applied field strengths while creating planar domain walls at lower applied fields. First-principles calculations are performed to understand the magnetic interactions between the Fe and CrN layers at their interfaces. The calculations are key to understanding the experimental observations.

Authors:
ORCiD logo; ; ; ; ; ; ORCiD logo;
Publication Date:
Research Org.:
The Ohio State University
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1594167
Report Number(s):
DOE-OSU-01304
Journal ID: ISSN 0022-3727
Grant/Contract Number:  
SC0001304
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. D, Applied Physics
Additional Journal Information:
Journal Volume: 53; Journal Issue: 12; Journal ID: ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Antiferromagnetic CrN, exchange bias, exchange spring.

Citation Formats

Alam, Khan, Meng, Keng-Yuan, Ponce-Pérez, Rodrigo, Cocoletzi, Gregorio H., Takeuchi, Noboru, Foley, Andrew, Yang, Fengyuan, and Smith, Arthur R. Exchange bias and exchange spring effects in Fe/CrN bilayers. United States: N. p., 2020. Web. doi:10.1088/1361-6463/ab6147.
Alam, Khan, Meng, Keng-Yuan, Ponce-Pérez, Rodrigo, Cocoletzi, Gregorio H., Takeuchi, Noboru, Foley, Andrew, Yang, Fengyuan, & Smith, Arthur R. Exchange bias and exchange spring effects in Fe/CrN bilayers. United States. doi:10.1088/1361-6463/ab6147.
Alam, Khan, Meng, Keng-Yuan, Ponce-Pérez, Rodrigo, Cocoletzi, Gregorio H., Takeuchi, Noboru, Foley, Andrew, Yang, Fengyuan, and Smith, Arthur R. Mon . "Exchange bias and exchange spring effects in Fe/CrN bilayers". United States. doi:10.1088/1361-6463/ab6147.
@article{osti_1594167,
title = {Exchange bias and exchange spring effects in Fe/CrN bilayers},
author = {Alam, Khan and Meng, Keng-Yuan and Ponce-Pérez, Rodrigo and Cocoletzi, Gregorio H. and Takeuchi, Noboru and Foley, Andrew and Yang, Fengyuan and Smith, Arthur R.},
abstractNote = {We studied exchange bias and exchange spring effects in magnetic bilayer thin films of Fe and CrN grown by molecular beam epitaxy. First, the relationships between exchange bias, coercivity, and blocking temperature and the Fe and CrN layers thicknesses are studied. Second, the exchange spring effect is observed and studied in all samples. The exchange spring breaks free at critical applied field strengths while creating planar domain walls at lower applied fields. First-principles calculations are performed to understand the magnetic interactions between the Fe and CrN layers at their interfaces. The calculations are key to understanding the experimental observations.},
doi = {10.1088/1361-6463/ab6147},
journal = {Journal of Physics. D, Applied Physics},
number = 12,
volume = 53,
place = {United States},
year = {2020},
month = {1}
}

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