Micromagnetic simulation of the influence of grain boundary on cerium substituted Nd-Fe-B magnets

A three-dimensional finite element model was performed to study the magnetization reversal of (CexNd1-x)2Fe14B nanocomposite permanent magnets. The influences of volume fraction, width and performance parameters of the grain boundary (GB) composition on the coercivity were analyzed by the method of...

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Published in:AIP advances 2017-05, Vol.7 (5), p.056201-056201-6
Main Authors: Liu, D., Zhao, T. Y., Li, R., Zhang, M., Shang, R. X., Xiong, J. F., Zhang, J., Sun, J. R., Shen, B. G.
Format: Article
Language:English
Subjects:
Anisotropy
Cerium
Coercivity
Computer simulation
Finite element method
Grain boundaries
Magnetization reversal
Nanocomposites
Neodymium
Organic chemistry
Permanent magnets
Three dimensional models
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cited_by cdi_FETCH-LOGICAL-c459t-d31d4e4c18f4ae531754f73d53b18ea087563d69bf8adf00d3c4ba5575823dc3
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container_title AIP advances
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creator Liu, D.
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description A three-dimensional finite element model was performed to study the magnetization reversal of (CexNd1-x)2Fe14B nanocomposite permanent magnets. The influences of volume fraction, width and performance parameters of the grain boundary (GB) composition on the coercivity were analyzed by the method of micromagnetic simulation. The calculation results indicate that the structure and chemistry of GB phase play important roles in Nd2Fe14B-based magnets. An abnormal increase in the value of coercivity is found to be connected with the GB phase, approximately when the percentage of doped cerium is between 20% and 30%. While the coercivity decreases directly with the increase in cerium content instead of being abnormal when there is no GB phase in magnets at all or the value of magnetocrystalline anisotropy or exchange integral is too large.
doi_str_mv 10.1063/1.4972803
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While the coercivity decreases directly with the increase in cerium content instead of being abnormal when there is no GB phase in magnets at all or the value of magnetocrystalline anisotropy or exchange integral is too large.</description><identifier>ISSN: 2158-3226</identifier><identifier>EISSN: 2158-3226</identifier><identifier>DOI: 10.1063/1.4972803</identifier><identifier>CODEN: AAIDBI</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Anisotropy ; Cerium ; Coercivity ; Computer simulation ; Finite element method ; Grain boundaries ; Magnetization reversal ; Nanocomposites ; Neodymium ; Organic chemistry ; Permanent magnets ; Three dimensional models</subject><ispartof>AIP advances, 2017-05, Vol.7 (5), p.056201-056201-6</ispartof><rights>Author(s)</rights><rights>2016 Author(s). 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While the coercivity decreases directly with the increase in cerium content instead of being abnormal when there is no GB phase in magnets at all or the value of magnetocrystalline anisotropy or exchange integral is too large.</description><subject>Anisotropy</subject><subject>Cerium</subject><subject>Coercivity</subject><subject>Computer simulation</subject><subject>Finite element method</subject><subject>Grain boundaries</subject><subject>Magnetization reversal</subject><subject>Nanocomposites</subject><subject>Neodymium</subject><subject>Organic chemistry</subject><subject>Permanent magnets</subject><subject>Three dimensional models</subject><issn>2158-3226</issn><issn>2158-3226</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>AJDQP</sourceid><sourceid>DOA</sourceid><recordid>eNp9kU1LAzEQhhdRsNQe_AcBTwpbk02ymz1qsSpUvfQesvmoKd1NzcfBf2_aLeLJucwwPLwz805RXCM4R7DG92hO2qZiEJ8VkwpRVuKqqs__1JfFLIQtzEFaBBmZFOLNSu96sRl0tBIE26ediNYNwBkQPzWwg9klPUh9aGy8sAPoXBqU8N8gU1J7m3oQUheijSlqBd5VudTlIxhFw1VxYcQu6NkpT4v18mm9eClXH8-vi4dVKQltY6kwUkQTiZghQlOMGkpMgxXFHWJaQNbQGqu67QwTykCosCSdoLShrMJK4mnxOsoqJ7Z8722fN-ROWH5sOL_hwucTd5pjLY3QUlJVN6RhrBMdZlCa1uBGKtplrZtRa-_dV9Ih8q1Lfsjb8wplM6sKEZip25HKBobgtfmdiiA__IMjfvpHZu9GNkgbj_7-A_8AV_aKag</recordid><startdate>20170501</startdate><enddate>20170501</enddate><creator>Liu, D.</creator><creator>Zhao, T. 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source AIP Open Access Journals; Free Full-Text Journals in Chemistry
subjects Anisotropy
Cerium
Coercivity
Computer simulation
Finite element method
Grain boundaries
Magnetization reversal
Nanocomposites
Neodymium
Organic chemistry
Permanent magnets
Three dimensional models
title Micromagnetic simulation of the influence of grain boundary on cerium substituted Nd-Fe-B magnets
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