Time-resolved imaging of an operating hard-disk-drive write head using nano-beam x-ray magnetic circular dichroism
We studied the dynamic magnetization behavior of a hard-disk-drive (HDD) write head by using nano-beam x-ray magnetic circular dichroism (XMCD). The write head was operated by applying a square-wave write current with a frequency of 211.9 MHz to the coil of the write head, which was in synchronizati...
Gespeichert in:
Veröffentlicht in: | Journal of applied physics 2020-10, Vol.128 (13) |
---|---|
Hauptverfasser: | , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | |
---|---|
container_issue | 13 |
container_start_page | |
container_title | Journal of applied physics |
container_volume | 128 |
creator | Suto, Hirofumi Kikitsu, Akira Kotani, Yoshinori Maeda, Tomoyuki Toyoki, Kentaro Osawa, Hitoshi Kikuchi, Nobuaki Okamoto, Satoshi Nakamura, Tetsuya |
description | We studied the dynamic magnetization behavior of a hard-disk-drive (HDD) write head by using nano-beam x-ray magnetic circular dichroism (XMCD). The write head was operated by applying a square-wave write current with a frequency of 211.9 MHz to the coil of the write head, which was in synchronization with the fivefold frequency of the x-ray pulses. Snapshot images of the magnetization on the air-bearing surface of the write head were obtained with spatial and time resolutions of 100 nm and 50 ps, respectively, and temporal changes in the magnetization of the main pole and the shield were observed. When a square-wave write current with a transition time of 0.2 ns was applied, the magnetization reversal of the main pole was completed in 0.7 ns, and this reversal time was determined by the dynamic property of the write head. During the main pole reversal, the shield area showed spatially non-uniform magnetization patterns, and its response was slower than that of the main pole. These results show that the XMCD measurement setup developed in this study is a powerful tool for understanding the dynamic behavior of an HDD write head and contributes to the development of higher capacity HDDs. |
doi_str_mv | 10.1063/5.0022571 |
format | Article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2448715633</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2448715633</sourcerecordid><originalsourceid>FETCH-LOGICAL-c393t-ee0fef05b1cac67adea73886843d3375c03613dd209bdc37d47c9e054480144b3</originalsourceid><addsrcrecordid>eNqd0M9LwzAUB_AgCs7pwf8g4EkhM2mapj3K8BcIXua5pMnrlrk29aWd7r-3YwPvnh7v8eH74EvIteAzwTN5r2acJ4nS4oRMBM8LppXip2QyXgXLC12ck4sY15wLkctiQnDhG2AIMWy24KhvzNK3SxpqaloaOkDT7_eVQcecj5_Mod8C_UbfA12BcXSIe9CaNrAKTEN_GJodHXNa6L2l1qMdNgap83aFwcfmkpzVZhPh6jin5OPpcTF_YW_vz6_zhzdmZSF7BsBrqLmqhDU208aB0TLPszyVTkqtLJeZkM4lvKicldql2hbAVZrmXKRpJafk5pDbYfgaIPblOgzYji_LZERaqEzKUd0elMUQI0Jddji2gLtS8HJfaanKY6WjvTvYaH0_FhPa_-FtwD9Ydq6WvxrAhWQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2448715633</pqid></control><display><type>article</type><title>Time-resolved imaging of an operating hard-disk-drive write head using nano-beam x-ray magnetic circular dichroism</title><source>American Institute of Physics (AIP) Journals</source><source>Alma/SFX Local Collection</source><creator>Suto, Hirofumi ; Kikitsu, Akira ; Kotani, Yoshinori ; Maeda, Tomoyuki ; Toyoki, Kentaro ; Osawa, Hitoshi ; Kikuchi, Nobuaki ; Okamoto, Satoshi ; Nakamura, Tetsuya</creator><creatorcontrib>Suto, Hirofumi ; Kikitsu, Akira ; Kotani, Yoshinori ; Maeda, Tomoyuki ; Toyoki, Kentaro ; Osawa, Hitoshi ; Kikuchi, Nobuaki ; Okamoto, Satoshi ; Nakamura, Tetsuya</creatorcontrib><description>We studied the dynamic magnetization behavior of a hard-disk-drive (HDD) write head by using nano-beam x-ray magnetic circular dichroism (XMCD). The write head was operated by applying a square-wave write current with a frequency of 211.9 MHz to the coil of the write head, which was in synchronization with the fivefold frequency of the x-ray pulses. Snapshot images of the magnetization on the air-bearing surface of the write head were obtained with spatial and time resolutions of 100 nm and 50 ps, respectively, and temporal changes in the magnetization of the main pole and the shield were observed. When a square-wave write current with a transition time of 0.2 ns was applied, the magnetization reversal of the main pole was completed in 0.7 ns, and this reversal time was determined by the dynamic property of the write head. During the main pole reversal, the shield area showed spatially non-uniform magnetization patterns, and its response was slower than that of the main pole. These results show that the XMCD measurement setup developed in this study is a powerful tool for understanding the dynamic behavior of an HDD write head and contributes to the development of higher capacity HDDs.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/5.0022571</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Coils ; Dichroism ; Magnetization reversal ; Synchronism ; Thermal energy</subject><ispartof>Journal of applied physics, 2020-10, Vol.128 (13)</ispartof><rights>Author(s)</rights><rights>2020 Author(s). Published under license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c393t-ee0fef05b1cac67adea73886843d3375c03613dd209bdc37d47c9e054480144b3</citedby><cites>FETCH-LOGICAL-c393t-ee0fef05b1cac67adea73886843d3375c03613dd209bdc37d47c9e054480144b3</cites><orcidid>0000-0001-5647-9477 ; 0000-0003-0819-3524 ; 0000-0003-2187-7728 ; 0000-0003-0197-466X ; 0000-0003-4387-5862 ; 0000-0002-1302-7769 ; 0000-0002-5470-7605</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/5.0022571$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76126</link.rule.ids></links><search><creatorcontrib>Suto, Hirofumi</creatorcontrib><creatorcontrib>Kikitsu, Akira</creatorcontrib><creatorcontrib>Kotani, Yoshinori</creatorcontrib><creatorcontrib>Maeda, Tomoyuki</creatorcontrib><creatorcontrib>Toyoki, Kentaro</creatorcontrib><creatorcontrib>Osawa, Hitoshi</creatorcontrib><creatorcontrib>Kikuchi, Nobuaki</creatorcontrib><creatorcontrib>Okamoto, Satoshi</creatorcontrib><creatorcontrib>Nakamura, Tetsuya</creatorcontrib><title>Time-resolved imaging of an operating hard-disk-drive write head using nano-beam x-ray magnetic circular dichroism</title><title>Journal of applied physics</title><description>We studied the dynamic magnetization behavior of a hard-disk-drive (HDD) write head by using nano-beam x-ray magnetic circular dichroism (XMCD). The write head was operated by applying a square-wave write current with a frequency of 211.9 MHz to the coil of the write head, which was in synchronization with the fivefold frequency of the x-ray pulses. Snapshot images of the magnetization on the air-bearing surface of the write head were obtained with spatial and time resolutions of 100 nm and 50 ps, respectively, and temporal changes in the magnetization of the main pole and the shield were observed. When a square-wave write current with a transition time of 0.2 ns was applied, the magnetization reversal of the main pole was completed in 0.7 ns, and this reversal time was determined by the dynamic property of the write head. During the main pole reversal, the shield area showed spatially non-uniform magnetization patterns, and its response was slower than that of the main pole. These results show that the XMCD measurement setup developed in this study is a powerful tool for understanding the dynamic behavior of an HDD write head and contributes to the development of higher capacity HDDs.</description><subject>Applied physics</subject><subject>Coils</subject><subject>Dichroism</subject><subject>Magnetization reversal</subject><subject>Synchronism</subject><subject>Thermal energy</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqd0M9LwzAUB_AgCs7pwf8g4EkhM2mapj3K8BcIXua5pMnrlrk29aWd7r-3YwPvnh7v8eH74EvIteAzwTN5r2acJ4nS4oRMBM8LppXip2QyXgXLC12ck4sY15wLkctiQnDhG2AIMWy24KhvzNK3SxpqaloaOkDT7_eVQcecj5_Mod8C_UbfA12BcXSIe9CaNrAKTEN_GJodHXNa6L2l1qMdNgap83aFwcfmkpzVZhPh6jin5OPpcTF_YW_vz6_zhzdmZSF7BsBrqLmqhDU208aB0TLPszyVTkqtLJeZkM4lvKicldql2hbAVZrmXKRpJafk5pDbYfgaIPblOgzYji_LZERaqEzKUd0elMUQI0Jddji2gLtS8HJfaanKY6WjvTvYaH0_FhPa_-FtwD9Ydq6WvxrAhWQ</recordid><startdate>20201007</startdate><enddate>20201007</enddate><creator>Suto, Hirofumi</creator><creator>Kikitsu, Akira</creator><creator>Kotani, Yoshinori</creator><creator>Maeda, Tomoyuki</creator><creator>Toyoki, Kentaro</creator><creator>Osawa, Hitoshi</creator><creator>Kikuchi, Nobuaki</creator><creator>Okamoto, Satoshi</creator><creator>Nakamura, Tetsuya</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-5647-9477</orcidid><orcidid>https://orcid.org/0000-0003-0819-3524</orcidid><orcidid>https://orcid.org/0000-0003-2187-7728</orcidid><orcidid>https://orcid.org/0000-0003-0197-466X</orcidid><orcidid>https://orcid.org/0000-0003-4387-5862</orcidid><orcidid>https://orcid.org/0000-0002-1302-7769</orcidid><orcidid>https://orcid.org/0000-0002-5470-7605</orcidid></search><sort><creationdate>20201007</creationdate><title>Time-resolved imaging of an operating hard-disk-drive write head using nano-beam x-ray magnetic circular dichroism</title><author>Suto, Hirofumi ; Kikitsu, Akira ; Kotani, Yoshinori ; Maeda, Tomoyuki ; Toyoki, Kentaro ; Osawa, Hitoshi ; Kikuchi, Nobuaki ; Okamoto, Satoshi ; Nakamura, Tetsuya</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-ee0fef05b1cac67adea73886843d3375c03613dd209bdc37d47c9e054480144b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Applied physics</topic><topic>Coils</topic><topic>Dichroism</topic><topic>Magnetization reversal</topic><topic>Synchronism</topic><topic>Thermal energy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Suto, Hirofumi</creatorcontrib><creatorcontrib>Kikitsu, Akira</creatorcontrib><creatorcontrib>Kotani, Yoshinori</creatorcontrib><creatorcontrib>Maeda, Tomoyuki</creatorcontrib><creatorcontrib>Toyoki, Kentaro</creatorcontrib><creatorcontrib>Osawa, Hitoshi</creatorcontrib><creatorcontrib>Kikuchi, Nobuaki</creatorcontrib><creatorcontrib>Okamoto, Satoshi</creatorcontrib><creatorcontrib>Nakamura, Tetsuya</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Suto, Hirofumi</au><au>Kikitsu, Akira</au><au>Kotani, Yoshinori</au><au>Maeda, Tomoyuki</au><au>Toyoki, Kentaro</au><au>Osawa, Hitoshi</au><au>Kikuchi, Nobuaki</au><au>Okamoto, Satoshi</au><au>Nakamura, Tetsuya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Time-resolved imaging of an operating hard-disk-drive write head using nano-beam x-ray magnetic circular dichroism</atitle><jtitle>Journal of applied physics</jtitle><date>2020-10-07</date><risdate>2020</risdate><volume>128</volume><issue>13</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>We studied the dynamic magnetization behavior of a hard-disk-drive (HDD) write head by using nano-beam x-ray magnetic circular dichroism (XMCD). The write head was operated by applying a square-wave write current with a frequency of 211.9 MHz to the coil of the write head, which was in synchronization with the fivefold frequency of the x-ray pulses. Snapshot images of the magnetization on the air-bearing surface of the write head were obtained with spatial and time resolutions of 100 nm and 50 ps, respectively, and temporal changes in the magnetization of the main pole and the shield were observed. When a square-wave write current with a transition time of 0.2 ns was applied, the magnetization reversal of the main pole was completed in 0.7 ns, and this reversal time was determined by the dynamic property of the write head. During the main pole reversal, the shield area showed spatially non-uniform magnetization patterns, and its response was slower than that of the main pole. These results show that the XMCD measurement setup developed in this study is a powerful tool for understanding the dynamic behavior of an HDD write head and contributes to the development of higher capacity HDDs.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0022571</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0001-5647-9477</orcidid><orcidid>https://orcid.org/0000-0003-0819-3524</orcidid><orcidid>https://orcid.org/0000-0003-2187-7728</orcidid><orcidid>https://orcid.org/0000-0003-0197-466X</orcidid><orcidid>https://orcid.org/0000-0003-4387-5862</orcidid><orcidid>https://orcid.org/0000-0002-1302-7769</orcidid><orcidid>https://orcid.org/0000-0002-5470-7605</orcidid></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0021-8979 |
ispartof | Journal of applied physics, 2020-10, Vol.128 (13) |
issn | 0021-8979 1089-7550 |
language | eng |
recordid | cdi_proquest_journals_2448715633 |
source | American Institute of Physics (AIP) Journals; Alma/SFX Local Collection |
subjects | Applied physics Coils Dichroism Magnetization reversal Synchronism Thermal energy |
title | Time-resolved imaging of an operating hard-disk-drive write head using nano-beam x-ray magnetic circular dichroism |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-07T19%3A32%3A41IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Time-resolved%20imaging%20of%20an%20operating%20hard-disk-drive%20write%20head%20using%20nano-beam%20x-ray%20magnetic%20circular%20dichroism&rft.jtitle=Journal%20of%20applied%20physics&rft.au=Suto,%20Hirofumi&rft.date=2020-10-07&rft.volume=128&rft.issue=13&rft.issn=0021-8979&rft.eissn=1089-7550&rft.coden=JAPIAU&rft_id=info:doi/10.1063/5.0022571&rft_dat=%3Cproquest_cross%3E2448715633%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2448715633&rft_id=info:pmid/&rfr_iscdi=true |