Room temperature multiferroic properties of (Fex, Sr1−x)TiO3 thin films
This letter reports the structural, dielectric, ferroelectric, and magnetic properties of Fe substituted SrTiO3 thin films in room temperature. The structural data obtained from x-ray diffraction indicates that (Fex,Sr1−x)TiO3, the so called FST, transforms from pseudocubic to tetragonal structures...
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| Veröffentlicht in: | Applied physics letters 2014-09, Vol.105 (10) |
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| creator | Kim, Kyoung-Tae Kim, Cheolbok Fang, Sheng-Po Yoon, Yong-Kyu |
| description | This letter reports the structural, dielectric, ferroelectric, and magnetic properties of Fe substituted SrTiO3 thin films in room temperature. The structural data obtained from x-ray diffraction indicates that (Fex,Sr1−x)TiO3, the so called FST, transforms from pseudocubic to tetragonal structures with increase of the Fe content in SrTiO3 thin films, featuring the ferroelectricity, while vibrating sample magnetometer measurements show magnetic hysteresis loops for the samples with low iron contents indicating their ferromagnetism. The characterized ferroelectricity and ferromagnetism confirms strong multiferroitism of the single phase FST thin films in room temperature. Also, an FST thin film metal-insulator-metal multiferroic capacitor has been fabricated and characterized in microwave frequencies between 10 MHz and 5 GHz. A capacitor based on Fe0.1Sr0.9TiO3 with a thickness of 260 nm shows a high electric tunability of 18.6% at 10 V and a maximum magnetodielectric value of 1.37% at 0.4 mT with a loss tangent of 0.021 at 1 GHz. This high tuning and low loss makes this material as a good candidate for frequency agile microwave devices such as tunable filters, phase shifters, and antennas. |
| doi_str_mv | 10.1063/1.4894850 |
| format | Article |
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The structural data obtained from x-ray diffraction indicates that (Fex,Sr1−x)TiO3, the so called FST, transforms from pseudocubic to tetragonal structures with increase of the Fe content in SrTiO3 thin films, featuring the ferroelectricity, while vibrating sample magnetometer measurements show magnetic hysteresis loops for the samples with low iron contents indicating their ferromagnetism. The characterized ferroelectricity and ferromagnetism confirms strong multiferroitism of the single phase FST thin films in room temperature. Also, an FST thin film metal-insulator-metal multiferroic capacitor has been fabricated and characterized in microwave frequencies between 10 MHz and 5 GHz. A capacitor based on Fe0.1Sr0.9TiO3 with a thickness of 260 nm shows a high electric tunability of 18.6% at 10 V and a maximum magnetodielectric value of 1.37% at 0.4 mT with a loss tangent of 0.021 at 1 GHz. This high tuning and low loss makes this material as a good candidate for frequency agile microwave devices such as tunable filters, phase shifters, and antennas.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4894850</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Capacitors ; Dielectric properties ; Electric filters ; Ferroelectric materials ; Ferroelectricity ; Ferromagnetism ; Hysteresis loops ; Insulators ; Iron ; Magnetic properties ; Magnetism ; Microwave frequencies ; Multiferroic materials ; Phase shifters ; Room temperature ; Strontium titanates ; Thin films ; Tunable filters ; X-ray diffraction</subject><ispartof>Applied physics letters, 2014-09, Vol.105 (10)</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c257t-7e386dfffc482d89f11dbb74144098b26d819b3031605732a4aea2e1ad2e8d323</citedby><cites>FETCH-LOGICAL-c257t-7e386dfffc482d89f11dbb74144098b26d819b3031605732a4aea2e1ad2e8d323</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Kim, Kyoung-Tae</creatorcontrib><creatorcontrib>Kim, Cheolbok</creatorcontrib><creatorcontrib>Fang, Sheng-Po</creatorcontrib><creatorcontrib>Yoon, Yong-Kyu</creatorcontrib><title>Room temperature multiferroic properties of (Fex, Sr1−x)TiO3 thin films</title><title>Applied physics letters</title><description>This letter reports the structural, dielectric, ferroelectric, and magnetic properties of Fe substituted SrTiO3 thin films in room temperature. The structural data obtained from x-ray diffraction indicates that (Fex,Sr1−x)TiO3, the so called FST, transforms from pseudocubic to tetragonal structures with increase of the Fe content in SrTiO3 thin films, featuring the ferroelectricity, while vibrating sample magnetometer measurements show magnetic hysteresis loops for the samples with low iron contents indicating their ferromagnetism. The characterized ferroelectricity and ferromagnetism confirms strong multiferroitism of the single phase FST thin films in room temperature. Also, an FST thin film metal-insulator-metal multiferroic capacitor has been fabricated and characterized in microwave frequencies between 10 MHz and 5 GHz. A capacitor based on Fe0.1Sr0.9TiO3 with a thickness of 260 nm shows a high electric tunability of 18.6% at 10 V and a maximum magnetodielectric value of 1.37% at 0.4 mT with a loss tangent of 0.021 at 1 GHz. This high tuning and low loss makes this material as a good candidate for frequency agile microwave devices such as tunable filters, phase shifters, and antennas.</description><subject>Applied physics</subject><subject>Capacitors</subject><subject>Dielectric properties</subject><subject>Electric filters</subject><subject>Ferroelectric materials</subject><subject>Ferroelectricity</subject><subject>Ferromagnetism</subject><subject>Hysteresis loops</subject><subject>Insulators</subject><subject>Iron</subject><subject>Magnetic properties</subject><subject>Magnetism</subject><subject>Microwave frequencies</subject><subject>Multiferroic materials</subject><subject>Phase shifters</subject><subject>Room temperature</subject><subject>Strontium titanates</subject><subject>Thin films</subject><subject>Tunable filters</subject><subject>X-ray diffraction</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNotUM1KAzEYDKJgrR58g4AXC27Nl5_d7FFKq4VCQes5ZHcTTNltapKF-gaefUSfxJX2NAwzzAyD0C2QKZCcPcKUy5JLQc7QCEhRZAxAnqMRIYRleSngEl3FuB2ooIyN0PLV-w4n0-1N0KkPBnd9m5w1IXhX433wg5CcidhbfL8whwf8FuD3--cw2bg1w-nD7bB1bRev0YXVbTQ3Jxyj98V8M3vJVuvn5expldVUFCkrDJN5Y62tuaSNLC1AU1UFB85JKSuaNxLKihEGOREFo5pro6kB3VAjG0bZGN0dc4dtn72JSW19H3ZDpaJAcyEopzC4JkdXHXyMwVi1D67T4UsBUf9PKVCnp9gfAPpZ9g</recordid><startdate>20140908</startdate><enddate>20140908</enddate><creator>Kim, Kyoung-Tae</creator><creator>Kim, Cheolbok</creator><creator>Fang, Sheng-Po</creator><creator>Yoon, Yong-Kyu</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20140908</creationdate><title>Room temperature multiferroic properties of (Fex, Sr1−x)TiO3 thin films</title><author>Kim, Kyoung-Tae ; Kim, Cheolbok ; Fang, Sheng-Po ; Yoon, Yong-Kyu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c257t-7e386dfffc482d89f11dbb74144098b26d819b3031605732a4aea2e1ad2e8d323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied physics</topic><topic>Capacitors</topic><topic>Dielectric properties</topic><topic>Electric filters</topic><topic>Ferroelectric materials</topic><topic>Ferroelectricity</topic><topic>Ferromagnetism</topic><topic>Hysteresis loops</topic><topic>Insulators</topic><topic>Iron</topic><topic>Magnetic properties</topic><topic>Magnetism</topic><topic>Microwave frequencies</topic><topic>Multiferroic materials</topic><topic>Phase shifters</topic><topic>Room temperature</topic><topic>Strontium titanates</topic><topic>Thin films</topic><topic>Tunable filters</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Kyoung-Tae</creatorcontrib><creatorcontrib>Kim, Cheolbok</creatorcontrib><creatorcontrib>Fang, Sheng-Po</creatorcontrib><creatorcontrib>Yoon, Yong-Kyu</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Kyoung-Tae</au><au>Kim, Cheolbok</au><au>Fang, Sheng-Po</au><au>Yoon, Yong-Kyu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Room temperature multiferroic properties of (Fex, Sr1−x)TiO3 thin films</atitle><jtitle>Applied physics letters</jtitle><date>2014-09-08</date><risdate>2014</risdate><volume>105</volume><issue>10</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>This letter reports the structural, dielectric, ferroelectric, and magnetic properties of Fe substituted SrTiO3 thin films in room temperature. The structural data obtained from x-ray diffraction indicates that (Fex,Sr1−x)TiO3, the so called FST, transforms from pseudocubic to tetragonal structures with increase of the Fe content in SrTiO3 thin films, featuring the ferroelectricity, while vibrating sample magnetometer measurements show magnetic hysteresis loops for the samples with low iron contents indicating their ferromagnetism. The characterized ferroelectricity and ferromagnetism confirms strong multiferroitism of the single phase FST thin films in room temperature. Also, an FST thin film metal-insulator-metal multiferroic capacitor has been fabricated and characterized in microwave frequencies between 10 MHz and 5 GHz. A capacitor based on Fe0.1Sr0.9TiO3 with a thickness of 260 nm shows a high electric tunability of 18.6% at 10 V and a maximum magnetodielectric value of 1.37% at 0.4 mT with a loss tangent of 0.021 at 1 GHz. This high tuning and low loss makes this material as a good candidate for frequency agile microwave devices such as tunable filters, phase shifters, and antennas.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4894850</doi></addata></record> |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Capacitors Dielectric properties Electric filters Ferroelectric materials Ferroelectricity Ferromagnetism Hysteresis loops Insulators Iron Magnetic properties Magnetism Microwave frequencies Multiferroic materials Phase shifters Room temperature Strontium titanates Thin films Tunable filters X-ray diffraction |
| title | Room temperature multiferroic properties of (Fex, Sr1−x)TiO3 thin films |
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