Frequency response of a thin cobalt film magnetooptic sensor
The magnetooptic effect is due to a change in the polarization of the light when it is reflected or passes through a magnetized material. The rotation of the polarization plane is proportional to the magnetic field. The great advantage of using a magnetooptic sensor to measure intensity or magnetic...
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| Veröffentlicht in: | IEEE transactions on instrumentation and measurement 2002-12, Vol.51 (6), p.1246-1251 |
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| container_title | IEEE transactions on instrumentation and measurement |
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| creator | Robles, G. Giannetti, R. |
| description | The magnetooptic effect is due to a change in the polarization of the light when it is reflected or passes through a magnetized material. The rotation of the polarization plane is proportional to the magnetic field. The great advantage of using a magnetooptic sensor to measure intensity or magnetic fields is its wide bandwidth. This fact is widely known; however, no effective measurements have been taken. In this paper, we present the frequency response of a cobalt thin film used as magnetooptic material. It was first excited by several sinusoidal magnetic fields at different frequencies. The range of frequencies studied in the first experiment reached 179 Hz, which is suitable for measuring power line intensity or magnetic fields. Because the coil that creates the magnetic field has a great impedance at higher frequencies, an alternative method based on magnetic impulses has been designed to obtain high-frequency data. With the latest experiments we have been able to measure frequencies as high as 2 MHz, obtaining a flat frequency response. |
| doi_str_mv | 10.1109/TIM.2002.808049 |
| format | Article |
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The rotation of the polarization plane is proportional to the magnetic field. The great advantage of using a magnetooptic sensor to measure intensity or magnetic fields is its wide bandwidth. This fact is widely known; however, no effective measurements have been taken. In this paper, we present the frequency response of a cobalt thin film used as magnetooptic material. It was first excited by several sinusoidal magnetic fields at different frequencies. The range of frequencies studied in the first experiment reached 179 Hz, which is suitable for measuring power line intensity or magnetic fields. Because the coil that creates the magnetic field has a great impedance at higher frequencies, an alternative method based on magnetic impulses has been designed to obtain high-frequency data. With the latest experiments we have been able to measure frequencies as high as 2 MHz, obtaining a flat frequency response.</description><identifier>ISSN: 0018-9456</identifier><identifier>EISSN: 1557-9662</identifier><identifier>DOI: 10.1109/TIM.2002.808049</identifier><identifier>CODEN: IEIMAO</identifier><language>eng</language><publisher>IEEE</publisher><subject>Cobalt ; Frequency measurement ; Frequency response ; Magnetic field measurement ; Magnetic films ; Magnetic materials ; Magnetic sensors ; Magnetooptic effects ; Optical polarization ; Thin film sensors</subject><ispartof>IEEE transactions on instrumentation and measurement, 2002-12, Vol.51 (6), p.1246-1251</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c246t-3f229aa45423a58fa42c6e076337f010a83797d0966f98eb0b73311a70aaf2df3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1177919$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1177919$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Robles, G.</creatorcontrib><creatorcontrib>Giannetti, R.</creatorcontrib><title>Frequency response of a thin cobalt film magnetooptic sensor</title><title>IEEE transactions on instrumentation and measurement</title><addtitle>TIM</addtitle><description>The magnetooptic effect is due to a change in the polarization of the light when it is reflected or passes through a magnetized material. The rotation of the polarization plane is proportional to the magnetic field. The great advantage of using a magnetooptic sensor to measure intensity or magnetic fields is its wide bandwidth. This fact is widely known; however, no effective measurements have been taken. In this paper, we present the frequency response of a cobalt thin film used as magnetooptic material. It was first excited by several sinusoidal magnetic fields at different frequencies. The range of frequencies studied in the first experiment reached 179 Hz, which is suitable for measuring power line intensity or magnetic fields. Because the coil that creates the magnetic field has a great impedance at higher frequencies, an alternative method based on magnetic impulses has been designed to obtain high-frequency data. With the latest experiments we have been able to measure frequencies as high as 2 MHz, obtaining a flat frequency response.</description><subject>Cobalt</subject><subject>Frequency measurement</subject><subject>Frequency response</subject><subject>Magnetic field measurement</subject><subject>Magnetic films</subject><subject>Magnetic materials</subject><subject>Magnetic sensors</subject><subject>Magnetooptic effects</subject><subject>Optical polarization</subject><subject>Thin film sensors</subject><issn>0018-9456</issn><issn>1557-9662</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpFkD1PwzAURS0EEqUwM7B4Ykt5_khsSyyoolCpiKXMlps-Q1ASBzsd-u9xFSSmt5x7dd8h5JbBgjEwD9v124ID8IUGDdKckRkrS1WYquLnZAbAdGFkWV2Sq5S-AUBVUs3I4yrizwH7-kgjpiH0CWnw1NHxq-lpHXauHalv2o527rPHMYRhbGqasE8hXpML79qEN393Tj5Wz9vla7F5f1kvnzZFzWU1FsJzbpyTpeTCldo7yesK8wAhlAcGTgtl1B7yVG807mCnhGDMKXDO870Xc3I_9Q4x5LFptF2Tamxb12M4JMu1gDI_m8GHCaxjSCmit0NsOhePloE9WbLZkj1ZspOlnLibEg0i_tNMKcOM-AWIRmJk</recordid><startdate>200212</startdate><enddate>200212</enddate><creator>Robles, G.</creator><creator>Giannetti, R.</creator><general>IEEE</general><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>200212</creationdate><title>Frequency response of a thin cobalt film magnetooptic sensor</title><author>Robles, G. ; Giannetti, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c246t-3f229aa45423a58fa42c6e076337f010a83797d0966f98eb0b73311a70aaf2df3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Cobalt</topic><topic>Frequency measurement</topic><topic>Frequency response</topic><topic>Magnetic field measurement</topic><topic>Magnetic films</topic><topic>Magnetic materials</topic><topic>Magnetic sensors</topic><topic>Magnetooptic effects</topic><topic>Optical polarization</topic><topic>Thin film sensors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Robles, G.</creatorcontrib><creatorcontrib>Giannetti, R.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on instrumentation and measurement</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Robles, G.</au><au>Giannetti, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Frequency response of a thin cobalt film magnetooptic sensor</atitle><jtitle>IEEE transactions on instrumentation and measurement</jtitle><stitle>TIM</stitle><date>2002-12</date><risdate>2002</risdate><volume>51</volume><issue>6</issue><spage>1246</spage><epage>1251</epage><pages>1246-1251</pages><issn>0018-9456</issn><eissn>1557-9662</eissn><coden>IEIMAO</coden><abstract>The magnetooptic effect is due to a change in the polarization of the light when it is reflected or passes through a magnetized material. The rotation of the polarization plane is proportional to the magnetic field. The great advantage of using a magnetooptic sensor to measure intensity or magnetic fields is its wide bandwidth. This fact is widely known; however, no effective measurements have been taken. In this paper, we present the frequency response of a cobalt thin film used as magnetooptic material. It was first excited by several sinusoidal magnetic fields at different frequencies. The range of frequencies studied in the first experiment reached 179 Hz, which is suitable for measuring power line intensity or magnetic fields. Because the coil that creates the magnetic field has a great impedance at higher frequencies, an alternative method based on magnetic impulses has been designed to obtain high-frequency data. 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| ispartof | IEEE transactions on instrumentation and measurement, 2002-12, Vol.51 (6), p.1246-1251 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Cobalt Frequency measurement Frequency response Magnetic field measurement Magnetic films Magnetic materials Magnetic sensors Magnetooptic effects Optical polarization Thin film sensors |
| title | Frequency response of a thin cobalt film magnetooptic sensor |
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