Room temperature magnetoelectric coupling in single crystal Bi2Fe4O9 nanotubes grown within an anodic aluminum oxide template
Single crystalline Bi2Fe4O9 nanotubes with diameter ~100nm were synthesized within the pores of Anodic Aluminium Oxide template by vacuum injection technique. The material showed ferroelectric hysteresis and weak ferromagnetism. The latter is ascribed to uncompensated spin at the nanotube surface. A...
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| Veröffentlicht in: | Materials letters 2012-08, Vol.81, p.138-141 |
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| creator | Hajra, P. Maiti, R.P. Chakravorty, D. |
| description | Single crystalline Bi2Fe4O9 nanotubes with diameter ~100nm were synthesized within the pores of Anodic Aluminium Oxide template by vacuum injection technique. The material showed ferroelectric hysteresis and weak ferromagnetism. The latter is ascribed to uncompensated spin at the nanotube surface. A core shell structure with an antiferromagnetic core and a ferromagnetic shell explain the observation of an exchange bias in the specimen. The latter showed a 20% relative change in the dielectric constant for an applied magnetic field of 1.9Tesla. This is ascribed to a change in the non centro-symmetricity of the crystal due to magnetostriction.
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► Single crystal Bi2Fe4O9 nanotubes synthesized in AAO template by vacuum injection. ► Ferroelectric hysteresis and weak ferromagnetism observed at 300K (RT). ► Material showed 20% change in dielectric constant at RT for a field of 1.9Tesla. ► The material will find application in nanosensor devices. |
| doi_str_mv | 10.1016/j.matlet.2012.04.123 |
| format | Article |
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[Display omitted]
► Single crystal Bi2Fe4O9 nanotubes synthesized in AAO template by vacuum injection. ► Ferroelectric hysteresis and weak ferromagnetism observed at 300K (RT). ► Material showed 20% change in dielectric constant at RT for a field of 1.9Tesla. ► The material will find application in nanosensor devices.</description><identifier>ISSN: 0167-577X</identifier><identifier>EISSN: 1873-4979</identifier><identifier>DOI: 10.1016/j.matlet.2012.04.123</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Aluminum oxide ; Anodic ; Bi2Fe4O9 nanotube ; Bias ; Core-shell structure ; Ferromagnetism ; hysteresis ; Magnetic fields ; Magnetic materials ; Magnetoelectric coupling ; Nanocomposites ; Nanotubes ; Shells ; Single crystal ; temperature</subject><ispartof>Materials letters, 2012-08, Vol.81, p.138-141</ispartof><rights>2012 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-cea00945f6595bb1ee0773fa031a11d99c23fd487af47d38c7928e69eed82be13</citedby><cites>FETCH-LOGICAL-c293t-cea00945f6595bb1ee0773fa031a11d99c23fd487af47d38c7928e69eed82be13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.matlet.2012.04.123$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Hajra, P.</creatorcontrib><creatorcontrib>Maiti, R.P.</creatorcontrib><creatorcontrib>Chakravorty, D.</creatorcontrib><title>Room temperature magnetoelectric coupling in single crystal Bi2Fe4O9 nanotubes grown within an anodic aluminum oxide template</title><title>Materials letters</title><description>Single crystalline Bi2Fe4O9 nanotubes with diameter ~100nm were synthesized within the pores of Anodic Aluminium Oxide template by vacuum injection technique. The material showed ferroelectric hysteresis and weak ferromagnetism. The latter is ascribed to uncompensated spin at the nanotube surface. A core shell structure with an antiferromagnetic core and a ferromagnetic shell explain the observation of an exchange bias in the specimen. The latter showed a 20% relative change in the dielectric constant for an applied magnetic field of 1.9Tesla. This is ascribed to a change in the non centro-symmetricity of the crystal due to magnetostriction.
[Display omitted]
► Single crystal Bi2Fe4O9 nanotubes synthesized in AAO template by vacuum injection. ► Ferroelectric hysteresis and weak ferromagnetism observed at 300K (RT). ► Material showed 20% change in dielectric constant at RT for a field of 1.9Tesla. ► The material will find application in nanosensor devices.</description><subject>Aluminum oxide</subject><subject>Anodic</subject><subject>Bi2Fe4O9 nanotube</subject><subject>Bias</subject><subject>Core-shell structure</subject><subject>Ferromagnetism</subject><subject>hysteresis</subject><subject>Magnetic fields</subject><subject>Magnetic materials</subject><subject>Magnetoelectric coupling</subject><subject>Nanocomposites</subject><subject>Nanotubes</subject><subject>Shells</subject><subject>Single crystal</subject><subject>temperature</subject><issn>0167-577X</issn><issn>1873-4979</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kE1r3DAQhkVpoNsk_yAQHXOxqy-vrEshDUlaCASaBHoTWnm80SJLW0lukkP_e7V1z4WBuTzvO8yD0BklLSV0_WnXTqZ4KC0jlLVEtJTxd2hFe8kboaR6j1YVk00n5Y8P6GPOO0KIUESs0O_vMU64wLSHZMqcAE9mG6BE8GBLchbbOO-9C1vsAs51e8A2veViPP7i2A2Ie4WDCbHMG8h4m-JLwC-uPFfcHCYOtcT4eXJhnnB8dQP8vedNgRN0NBqf4fTfPkZPN9ePV1-bu_vbb1eXd41lipfGgiFEiW5cd6rbbCgAkZKPhnBqKB2UsoyPg-ilGYUceG-lYj2sFcDQsw1Qfowult59ij9nyEVPLlvw3gSIc9a0NnHerdkBFQtqU8w5waj3yU0mvVVIH2zrnV5s64NtTYSutmvsfImNJmqzTS7rp4cKdNU0Z0J0lfi8EFAf_eUg6WwdBAuDS1W1HqL7_4k_ikOWXg</recordid><startdate>20120815</startdate><enddate>20120815</enddate><creator>Hajra, P.</creator><creator>Maiti, R.P.</creator><creator>Chakravorty, D.</creator><general>Elsevier B.V</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20120815</creationdate><title>Room temperature magnetoelectric coupling in single crystal Bi2Fe4O9 nanotubes grown within an anodic aluminum oxide template</title><author>Hajra, P. ; Maiti, R.P. ; Chakravorty, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-cea00945f6595bb1ee0773fa031a11d99c23fd487af47d38c7928e69eed82be13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Aluminum oxide</topic><topic>Anodic</topic><topic>Bi2Fe4O9 nanotube</topic><topic>Bias</topic><topic>Core-shell structure</topic><topic>Ferromagnetism</topic><topic>hysteresis</topic><topic>Magnetic fields</topic><topic>Magnetic materials</topic><topic>Magnetoelectric coupling</topic><topic>Nanocomposites</topic><topic>Nanotubes</topic><topic>Shells</topic><topic>Single crystal</topic><topic>temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hajra, P.</creatorcontrib><creatorcontrib>Maiti, R.P.</creatorcontrib><creatorcontrib>Chakravorty, D.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hajra, P.</au><au>Maiti, R.P.</au><au>Chakravorty, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Room temperature magnetoelectric coupling in single crystal Bi2Fe4O9 nanotubes grown within an anodic aluminum oxide template</atitle><jtitle>Materials letters</jtitle><date>2012-08-15</date><risdate>2012</risdate><volume>81</volume><spage>138</spage><epage>141</epage><pages>138-141</pages><issn>0167-577X</issn><eissn>1873-4979</eissn><abstract>Single crystalline Bi2Fe4O9 nanotubes with diameter ~100nm were synthesized within the pores of Anodic Aluminium Oxide template by vacuum injection technique. The material showed ferroelectric hysteresis and weak ferromagnetism. The latter is ascribed to uncompensated spin at the nanotube surface. A core shell structure with an antiferromagnetic core and a ferromagnetic shell explain the observation of an exchange bias in the specimen. The latter showed a 20% relative change in the dielectric constant for an applied magnetic field of 1.9Tesla. This is ascribed to a change in the non centro-symmetricity of the crystal due to magnetostriction.
[Display omitted]
► Single crystal Bi2Fe4O9 nanotubes synthesized in AAO template by vacuum injection. ► Ferroelectric hysteresis and weak ferromagnetism observed at 300K (RT). ► Material showed 20% change in dielectric constant at RT for a field of 1.9Tesla. ► The material will find application in nanosensor devices.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.matlet.2012.04.123</doi><tpages>4</tpages></addata></record> |
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| ispartof | Materials letters, 2012-08, Vol.81, p.138-141 |
| issn | 0167-577X 1873-4979 |
| language | eng |
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| subjects | Aluminum oxide Anodic Bi2Fe4O9 nanotube Bias Core-shell structure Ferromagnetism hysteresis Magnetic fields Magnetic materials Magnetoelectric coupling Nanocomposites Nanotubes Shells Single crystal temperature |
| title | Room temperature magnetoelectric coupling in single crystal Bi2Fe4O9 nanotubes grown within an anodic aluminum oxide template |
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