Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films

Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films

Patterned Ni80Fe20 permalloy films with strip length of 5 mm, strip distance of 40μm and various ferromagnetic (FM) strip widths from 20 to 40μm were prepared by pulse laser deposition and photolithography for study the microwave performance of permalloy films. Comparing with the continuous magnetic...

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Main Authors: Ru Yang, Xiaomin Liu, Honglei Du, Nian X. Sun, Hwaider Lin, Shandong Li
Format: Article
Language:English
Published: AIP Publishing LLC 2017-05-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4972799
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spelling doaj-8e5c735a833c46baac24c7ab0e51d3fe2020-11-25T00:56:00ZengAIP Publishing LLCAIP Advances2158-32262017-05-0175056301056301-510.1063/1.4972799004791ADVSelf-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin filmsRu Yang0Xiaomin Liu1Honglei Du2Nian X. Sun3Hwaider Lin4Shandong Li5College of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaSchool of Physics, Shandong University, Jian 250100, ChinaDepartment of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USADepartment of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USACollege of Physics, Qingdao University, Qingdao 266071, ChinaPatterned Ni80Fe20 permalloy films with strip length of 5 mm, strip distance of 40μm and various ferromagnetic (FM) strip widths from 20 to 40μm were prepared by pulse laser deposition and photolithography for study the microwave performance of permalloy films. Comparing with the continuous magnetically isotropic permalloy film, the anisotropy fields HK increase with the decrease of the FM strips’ width. As a result, the ferromagnetic resonance frequency fr is enhanced from 1.71 GHz of continuous film to 2.1 GHz of patterned film with FM strip width of 20μm. The comparison between fr and HK demonstrates that the enhancement of fr can be attributed to the increase of HK due to the shape anisotropy of permalloy strips.http://dx.doi.org/10.1063/1.4972799
collection DOAJ
language English
format Article
sources DOAJ
author Ru Yang
Xiaomin Liu
Honglei Du
Nian X. Sun
Hwaider Lin
Shandong Li
spellingShingle Ru Yang
Xiaomin Liu
Honglei Du
Nian X. Sun
Hwaider Lin
Shandong Li
Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films
AIP Advances
author_facet Ru Yang
Xiaomin Liu
Honglei Du
Nian X. Sun
Hwaider Lin
Shandong Li
author_sort Ru Yang
title Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films
title_short Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films
title_full Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films
title_fullStr Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films
title_full_unstemmed Self-biased microwave ferromagnetic performance of patterned Ni80Fe20 thin films
title_sort self-biased microwave ferromagnetic performance of patterned ni80fe20 thin films
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2017-05-01
description Patterned Ni80Fe20 permalloy films with strip length of 5 mm, strip distance of 40μm and various ferromagnetic (FM) strip widths from 20 to 40μm were prepared by pulse laser deposition and photolithography for study the microwave performance of permalloy films. Comparing with the continuous magnetically isotropic permalloy film, the anisotropy fields HK increase with the decrease of the FM strips’ width. As a result, the ferromagnetic resonance frequency fr is enhanced from 1.71 GHz of continuous film to 2.1 GHz of patterned film with FM strip width of 20μm. The comparison between fr and HK demonstrates that the enhancement of fr can be attributed to the increase of HK due to the shape anisotropy of permalloy strips.
url http://dx.doi.org/10.1063/1.4972799
work_keys_str_mv AT ruyang selfbiasedmicrowaveferromagneticperformanceofpatternedni80fe20thinfilms
AT xiaominliu selfbiasedmicrowaveferromagneticperformanceofpatternedni80fe20thinfilms
AT hongleidu selfbiasedmicrowaveferromagneticperformanceofpatternedni80fe20thinfilms
AT nianxsun selfbiasedmicrowaveferromagneticperformanceofpatternedni80fe20thinfilms
AT hwaiderlin selfbiasedmicrowaveferromagneticperformanceofpatternedni80fe20thinfilms
AT shandongli selfbiasedmicrowaveferromagneticperformanceofpatternedni80fe20thinfilms
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