Spin-torque sensor with tunable sensitivity and detection range
A linear magnetic-field sensor utilizing a MgO-based spin-transfer torque magnetic tunnel junction (STT-MTJ) is demonstrated in this study. In order to obtain a linear field sensor, the behaviour of the resistance, R, versus the magnetic field, H, is controlled by the application of bipolar voltage...
Gespeichert in:
| Veröffentlicht in: | Journal of physics. D, Applied physics Applied physics, 2014-11, Vol.47 (44), p.445004-5 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 5 |
|---|---|
| container_issue | 44 |
| container_start_page | 445004 |
| container_title | Journal of physics. D, Applied physics |
| container_volume | 47 |
| creator | Kim, Sang-Il Seo, Min-Su Choi, Yeon Suk Park, Seung-Young |
| description | A linear magnetic-field sensor utilizing a MgO-based spin-transfer torque magnetic tunnel junction (STT-MTJ) is demonstrated in this study. In order to obtain a linear field sensor, the behaviour of the resistance, R, versus the magnetic field, H, is controlled by the application of bipolar voltage pulses. The R(H) loops are collapsed completely and show a linear response to the applied field with a sensitivity of 4.21%/Oe in the sensing mode. This loop-collapsing method, i.e. eliminating coercivity, is an important technique in the design of STT-MTJ sensors. The bipolar pulse-driven STT-MTJ sensor was observed to have adjustable sensitivity. Furthermore, the linear response region could be intentionally shifted by applying a varying direct current voltage. This bipolar pulse-driving method for realizing a tunable field sensor is a good candidate for embedded multifunctional sensing devices. |
| doi_str_mv | 10.1088/0022-3727/47/44/445004 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1651426004</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1651426004</sourcerecordid><originalsourceid>FETCH-LOGICAL-c309t-459732f10be469a8fffa90148c6e160a04fed81d75f43dc170f90ea5a54d4b6b3</originalsourceid><addsrcrecordid>eNqFkEFLxDAQhYMouK7-BelJvNSdNGnankQWV4UFD-o5pE2iWbpJTVJl_71ZKoIgCA8Ghu8N8x5C5xiuMNT1AqAoclIV1YIm0aQSgB6gGSYM54wycohmP9AxOglhAwAlq_EMXT8NxubR-fdRZUHZ4Hz2aeJbFkcr2n7amWg-TNxlwspMqqi6aJzNvLCv6hQdadEHdfY95-hldfu8vM_Xj3cPy5t13hFoYk7LpiKFxtAqyhpRa61FA5jWHVOYgQCqlayxrEpNiexwBboBJUpRUklb1pI5upzuDt6lV0PkWxM61ffCKjcGjlmJacFS8ISyCe28C8ErzQdvtsLvOAa-b4zvy-D7MjhNonxqLBkvJqNxA9-40duUiMtfEB-kTmDxB_jP9S8uOHnj</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1651426004</pqid></control><display><type>article</type><title>Spin-torque sensor with tunable sensitivity and detection range</title><source>IOP Publishing Journals</source><source>Institute of Physics (IOP) Journals - HEAL-Link</source><creator>Kim, Sang-Il ; Seo, Min-Su ; Choi, Yeon Suk ; Park, Seung-Young</creator><creatorcontrib>Kim, Sang-Il ; Seo, Min-Su ; Choi, Yeon Suk ; Park, Seung-Young</creatorcontrib><description>A linear magnetic-field sensor utilizing a MgO-based spin-transfer torque magnetic tunnel junction (STT-MTJ) is demonstrated in this study. In order to obtain a linear field sensor, the behaviour of the resistance, R, versus the magnetic field, H, is controlled by the application of bipolar voltage pulses. The R(H) loops are collapsed completely and show a linear response to the applied field with a sensitivity of 4.21%/Oe in the sensing mode. This loop-collapsing method, i.e. eliminating coercivity, is an important technique in the design of STT-MTJ sensors. The bipolar pulse-driven STT-MTJ sensor was observed to have adjustable sensitivity. Furthermore, the linear response region could be intentionally shifted by applying a varying direct current voltage. This bipolar pulse-driving method for realizing a tunable field sensor is a good candidate for embedded multifunctional sensing devices.</description><identifier>ISSN: 0022-3727</identifier><identifier>EISSN: 1361-6463</identifier><identifier>DOI: 10.1088/0022-3727/47/44/445004</identifier><identifier>CODEN: JPAPBE</identifier><language>eng</language><publisher>IOP Publishing</publisher><subject>Adjustable ; Direct current ; Electric potential ; magnetic field sensor ; Magnetic fields ; magnetic tunnel junction ; Sensing devices ; Sensors ; spin-transfer torque ; switching phase diagram ; Tunnel junctions ; Voltage</subject><ispartof>Journal of physics. D, Applied physics, 2014-11, Vol.47 (44), p.445004-5</ispartof><rights>2014 IOP Publishing Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c309t-459732f10be469a8fffa90148c6e160a04fed81d75f43dc170f90ea5a54d4b6b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/0022-3727/47/44/445004/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27923,27924,53845,53892</link.rule.ids></links><search><creatorcontrib>Kim, Sang-Il</creatorcontrib><creatorcontrib>Seo, Min-Su</creatorcontrib><creatorcontrib>Choi, Yeon Suk</creatorcontrib><creatorcontrib>Park, Seung-Young</creatorcontrib><title>Spin-torque sensor with tunable sensitivity and detection range</title><title>Journal of physics. D, Applied physics</title><addtitle>JPhysD</addtitle><addtitle>J. Phys. D: Appl. Phys</addtitle><description>A linear magnetic-field sensor utilizing a MgO-based spin-transfer torque magnetic tunnel junction (STT-MTJ) is demonstrated in this study. In order to obtain a linear field sensor, the behaviour of the resistance, R, versus the magnetic field, H, is controlled by the application of bipolar voltage pulses. The R(H) loops are collapsed completely and show a linear response to the applied field with a sensitivity of 4.21%/Oe in the sensing mode. This loop-collapsing method, i.e. eliminating coercivity, is an important technique in the design of STT-MTJ sensors. The bipolar pulse-driven STT-MTJ sensor was observed to have adjustable sensitivity. Furthermore, the linear response region could be intentionally shifted by applying a varying direct current voltage. This bipolar pulse-driving method for realizing a tunable field sensor is a good candidate for embedded multifunctional sensing devices.</description><subject>Adjustable</subject><subject>Direct current</subject><subject>Electric potential</subject><subject>magnetic field sensor</subject><subject>Magnetic fields</subject><subject>magnetic tunnel junction</subject><subject>Sensing devices</subject><subject>Sensors</subject><subject>spin-transfer torque</subject><subject>switching phase diagram</subject><subject>Tunnel junctions</subject><subject>Voltage</subject><issn>0022-3727</issn><issn>1361-6463</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkEFLxDAQhYMouK7-BelJvNSdNGnankQWV4UFD-o5pE2iWbpJTVJl_71ZKoIgCA8Ghu8N8x5C5xiuMNT1AqAoclIV1YIm0aQSgB6gGSYM54wycohmP9AxOglhAwAlq_EMXT8NxubR-fdRZUHZ4Hz2aeJbFkcr2n7amWg-TNxlwspMqqi6aJzNvLCv6hQdadEHdfY95-hldfu8vM_Xj3cPy5t13hFoYk7LpiKFxtAqyhpRa61FA5jWHVOYgQCqlayxrEpNiexwBboBJUpRUklb1pI5upzuDt6lV0PkWxM61ffCKjcGjlmJacFS8ISyCe28C8ErzQdvtsLvOAa-b4zvy-D7MjhNonxqLBkvJqNxA9-40duUiMtfEB-kTmDxB_jP9S8uOHnj</recordid><startdate>20141105</startdate><enddate>20141105</enddate><creator>Kim, Sang-Il</creator><creator>Seo, Min-Su</creator><creator>Choi, Yeon Suk</creator><creator>Park, Seung-Young</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20141105</creationdate><title>Spin-torque sensor with tunable sensitivity and detection range</title><author>Kim, Sang-Il ; Seo, Min-Su ; Choi, Yeon Suk ; Park, Seung-Young</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c309t-459732f10be469a8fffa90148c6e160a04fed81d75f43dc170f90ea5a54d4b6b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adjustable</topic><topic>Direct current</topic><topic>Electric potential</topic><topic>magnetic field sensor</topic><topic>Magnetic fields</topic><topic>magnetic tunnel junction</topic><topic>Sensing devices</topic><topic>Sensors</topic><topic>spin-transfer torque</topic><topic>switching phase diagram</topic><topic>Tunnel junctions</topic><topic>Voltage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Sang-Il</creatorcontrib><creatorcontrib>Seo, Min-Su</creatorcontrib><creatorcontrib>Choi, Yeon Suk</creatorcontrib><creatorcontrib>Park, Seung-Young</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of physics. D, Applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Sang-Il</au><au>Seo, Min-Su</au><au>Choi, Yeon Suk</au><au>Park, Seung-Young</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spin-torque sensor with tunable sensitivity and detection range</atitle><jtitle>Journal of physics. D, Applied physics</jtitle><stitle>JPhysD</stitle><addtitle>J. Phys. D: Appl. Phys</addtitle><date>2014-11-05</date><risdate>2014</risdate><volume>47</volume><issue>44</issue><spage>445004</spage><epage>5</epage><pages>445004-5</pages><issn>0022-3727</issn><eissn>1361-6463</eissn><coden>JPAPBE</coden><abstract>A linear magnetic-field sensor utilizing a MgO-based spin-transfer torque magnetic tunnel junction (STT-MTJ) is demonstrated in this study. In order to obtain a linear field sensor, the behaviour of the resistance, R, versus the magnetic field, H, is controlled by the application of bipolar voltage pulses. The R(H) loops are collapsed completely and show a linear response to the applied field with a sensitivity of 4.21%/Oe in the sensing mode. This loop-collapsing method, i.e. eliminating coercivity, is an important technique in the design of STT-MTJ sensors. The bipolar pulse-driven STT-MTJ sensor was observed to have adjustable sensitivity. Furthermore, the linear response region could be intentionally shifted by applying a varying direct current voltage. This bipolar pulse-driving method for realizing a tunable field sensor is a good candidate for embedded multifunctional sensing devices.</abstract><pub>IOP Publishing</pub><doi>10.1088/0022-3727/47/44/445004</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0022-3727 |
| ispartof | Journal of physics. D, Applied physics, 2014-11, Vol.47 (44), p.445004-5 |
| issn | 0022-3727 1361-6463 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1651426004 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Adjustable Direct current Electric potential magnetic field sensor Magnetic fields magnetic tunnel junction Sensing devices Sensors spin-transfer torque switching phase diagram Tunnel junctions Voltage |
| title | Spin-torque sensor with tunable sensitivity and detection range |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-12T12%3A23%3A24IST&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=Spin-torque%20sensor%20with%20tunable%20sensitivity%20and%20detection%20range&rft.jtitle=Journal%20of%20physics.%20D,%20Applied%20physics&rft.au=Kim,%20Sang-Il&rft.date=2014-11-05&rft.volume=47&rft.issue=44&rft.spage=445004&rft.epage=5&rft.pages=445004-5&rft.issn=0022-3727&rft.eissn=1361-6463&rft.coden=JPAPBE&rft_id=info:doi/10.1088/0022-3727/47/44/445004&rft_dat=%3Cproquest_cross%3E1651426004%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=1651426004&rft_id=info:pmid/&rfr_iscdi=true |