Structural, dielectric and magnetic properties of cobalt ferrite prepared using auto combustion and ceramic route
Cobalt ferrite is synthesized by using low temperature auto combustion and high temperature ceramic methods. The prepared samples have values of lattice constant equal to 8.40Å and 8.38Å for auto combustion and ceramic methods respectively. The FTIR spectrum of samples of the auto combustion method...
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| Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2014-09, Vol.448, p.53-56 |
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| creator | Murugesan, C. Perumal, M. Chandrasekaran, G. |
| description | Cobalt ferrite is synthesized by using low temperature auto combustion and high temperature ceramic methods. The prepared samples have values of lattice constant equal to 8.40Å and 8.38Å for auto combustion and ceramic methods respectively. The FTIR spectrum of samples of the auto combustion method shows a high frequency vibrational band at 580cm−1 assigned to tetrahedral site and a low frequency vibrational band at 409cm−1 assigned to octahedral site which are shifted to 590cm−1 and 412cm−1 for the ceramic method sample. SEM micrographs of samples show a substantial difference in surface morphology and size of the grains between the two methods. The frequency dependent dielectric constant and ac conductivity of the samples measured from 1Hz to 2MHz at room temperature are reported. The room temperature magnetic hysteresis parameters of the samples are measured using VSM. The measured values of saturation magnetization, coercivity and remanent magnetization are 42emu/g, 1553Oe, 18.5emu/g for the auto combustion method, 66.7emu/g, 379.6Oe, and 17.3emu/g for the ceramic method, respectively. The difference in preparation methods and size of the grains causes interesting changes in electrical and magnetic properties. |
| doi_str_mv | 10.1016/j.physb.2014.04.055 |
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The prepared samples have values of lattice constant equal to 8.40Å and 8.38Å for auto combustion and ceramic methods respectively. The FTIR spectrum of samples of the auto combustion method shows a high frequency vibrational band at 580cm−1 assigned to tetrahedral site and a low frequency vibrational band at 409cm−1 assigned to octahedral site which are shifted to 590cm−1 and 412cm−1 for the ceramic method sample. SEM micrographs of samples show a substantial difference in surface morphology and size of the grains between the two methods. The frequency dependent dielectric constant and ac conductivity of the samples measured from 1Hz to 2MHz at room temperature are reported. The room temperature magnetic hysteresis parameters of the samples are measured using VSM. The measured values of saturation magnetization, coercivity and remanent magnetization are 42emu/g, 1553Oe, 18.5emu/g for the auto combustion method, 66.7emu/g, 379.6Oe, and 17.3emu/g for the ceramic method, respectively. The difference in preparation methods and size of the grains causes interesting changes in electrical and magnetic properties.</description><identifier>ISSN: 0921-4526</identifier><identifier>EISSN: 1873-2135</identifier><identifier>DOI: 10.1016/j.physb.2014.04.055</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>Ac electrical conductivity ; Auto combustion ; Automobiles ; Automotive components ; Automotive engineering ; Automotive industry ; Band spectra ; Ceramic method ; Ceramics ; Combustion ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Dielectric constant ; Dielectric properties of solids and liquids ; Dielectrics, piezoelectrics, and ferroelectrics and their properties ; Domain effects, magnetization curves, and hysteresis ; Exact sciences and technology ; Ferrite ; Magnetic properties ; Magnetic properties and materials ; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects ; Permittivity (dielectric function) ; Physics ; Saturation magnetization</subject><ispartof>Physica. B, Condensed matter, 2014-09, Vol.448, p.53-56</ispartof><rights>2014 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c469t-c81e52c1596ca46547622020db0d4bbe23f3ed4c614e75b778356b6ac02661733</citedby><cites>FETCH-LOGICAL-c469t-c81e52c1596ca46547622020db0d4bbe23f3ed4c614e75b778356b6ac02661733</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0921452614003457$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>309,310,314,776,780,785,786,3537,23909,23910,25118,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28741300$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Murugesan, C.</creatorcontrib><creatorcontrib>Perumal, M.</creatorcontrib><creatorcontrib>Chandrasekaran, G.</creatorcontrib><title>Structural, dielectric and magnetic properties of cobalt ferrite prepared using auto combustion and ceramic route</title><title>Physica. B, Condensed matter</title><description>Cobalt ferrite is synthesized by using low temperature auto combustion and high temperature ceramic methods. The prepared samples have values of lattice constant equal to 8.40Å and 8.38Å for auto combustion and ceramic methods respectively. The FTIR spectrum of samples of the auto combustion method shows a high frequency vibrational band at 580cm−1 assigned to tetrahedral site and a low frequency vibrational band at 409cm−1 assigned to octahedral site which are shifted to 590cm−1 and 412cm−1 for the ceramic method sample. SEM micrographs of samples show a substantial difference in surface morphology and size of the grains between the two methods. The frequency dependent dielectric constant and ac conductivity of the samples measured from 1Hz to 2MHz at room temperature are reported. The room temperature magnetic hysteresis parameters of the samples are measured using VSM. The measured values of saturation magnetization, coercivity and remanent magnetization are 42emu/g, 1553Oe, 18.5emu/g for the auto combustion method, 66.7emu/g, 379.6Oe, and 17.3emu/g for the ceramic method, respectively. The difference in preparation methods and size of the grains causes interesting changes in electrical and magnetic properties.</description><subject>Ac electrical conductivity</subject><subject>Auto combustion</subject><subject>Automobiles</subject><subject>Automotive components</subject><subject>Automotive engineering</subject><subject>Automotive industry</subject><subject>Band spectra</subject><subject>Ceramic method</subject><subject>Ceramics</subject><subject>Combustion</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Dielectric constant</subject><subject>Dielectric properties of solids and liquids</subject><subject>Dielectrics, piezoelectrics, and ferroelectrics and their properties</subject><subject>Domain effects, magnetization curves, and hysteresis</subject><subject>Exact sciences and technology</subject><subject>Ferrite</subject><subject>Magnetic properties</subject><subject>Magnetic properties and materials</subject><subject>Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects</subject><subject>Permittivity (dielectric function)</subject><subject>Physics</subject><subject>Saturation magnetization</subject><issn>0921-4526</issn><issn>1873-2135</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNkU-LFDEQxYMoOK5-Ai99ETzYs6n8nT54kGXVhQUP6jmk09Vrhu5ObyUt7Lc3s7N4FENBKPKr94o8xt4C3wMHc3ncr78ecr8XHNSe19L6GdvBwcpWgNTP2Y53AlqlhXnJXuV85PWAhR27_15oC2UjP31ohogThkIxNH4ZmtnfLVhqs1JakUrE3KSxCan3U2lGJIoF6yOunnBothyXu8ZvJVVk7rdcYloehQKSn6sOpa3ga_Zi9FPGN0_3Bfv5-frH1df29tuXm6tPt21QpittOABqEUB3JnhltLJGCC740PNB9T0KOUocVDCg0Ore2oPUpjc-cGEMWCkv2Puzbt3-fsNc3BxzwGnyC6YtOzDWdkrZzv4HKji3APyEyjMaKOVMOLqV4uzpwQF3pyzc0T1m4U5ZOF5L6zr17snA5-CnkfwSYv47Kg5WgeS8ch_PHNaP-R2RXA4Rl4BDpBqMG1L8p88ftJOhTQ</recordid><startdate>20140901</startdate><enddate>20140901</enddate><creator>Murugesan, C.</creator><creator>Perumal, M.</creator><creator>Chandrasekaran, G.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20140901</creationdate><title>Structural, dielectric and magnetic properties of cobalt ferrite prepared using auto combustion and ceramic route</title><author>Murugesan, C. ; Perumal, M. ; Chandrasekaran, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c469t-c81e52c1596ca46547622020db0d4bbe23f3ed4c614e75b778356b6ac02661733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Ac electrical conductivity</topic><topic>Auto combustion</topic><topic>Automobiles</topic><topic>Automotive components</topic><topic>Automotive engineering</topic><topic>Automotive industry</topic><topic>Band spectra</topic><topic>Ceramic method</topic><topic>Ceramics</topic><topic>Combustion</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Dielectric constant</topic><topic>Dielectric properties of solids and liquids</topic><topic>Dielectrics, piezoelectrics, and ferroelectrics and their properties</topic><topic>Domain effects, magnetization curves, and hysteresis</topic><topic>Exact sciences and technology</topic><topic>Ferrite</topic><topic>Magnetic properties</topic><topic>Magnetic properties and materials</topic><topic>Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects</topic><topic>Permittivity (dielectric function)</topic><topic>Physics</topic><topic>Saturation magnetization</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Murugesan, C.</creatorcontrib><creatorcontrib>Perumal, M.</creatorcontrib><creatorcontrib>Chandrasekaran, G.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. B, Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Murugesan, C.</au><au>Perumal, M.</au><au>Chandrasekaran, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural, dielectric and magnetic properties of cobalt ferrite prepared using auto combustion and ceramic route</atitle><jtitle>Physica. B, Condensed matter</jtitle><date>2014-09-01</date><risdate>2014</risdate><volume>448</volume><spage>53</spage><epage>56</epage><pages>53-56</pages><issn>0921-4526</issn><eissn>1873-2135</eissn><abstract>Cobalt ferrite is synthesized by using low temperature auto combustion and high temperature ceramic methods. The prepared samples have values of lattice constant equal to 8.40Å and 8.38Å for auto combustion and ceramic methods respectively. The FTIR spectrum of samples of the auto combustion method shows a high frequency vibrational band at 580cm−1 assigned to tetrahedral site and a low frequency vibrational band at 409cm−1 assigned to octahedral site which are shifted to 590cm−1 and 412cm−1 for the ceramic method sample. SEM micrographs of samples show a substantial difference in surface morphology and size of the grains between the two methods. The frequency dependent dielectric constant and ac conductivity of the samples measured from 1Hz to 2MHz at room temperature are reported. The room temperature magnetic hysteresis parameters of the samples are measured using VSM. The measured values of saturation magnetization, coercivity and remanent magnetization are 42emu/g, 1553Oe, 18.5emu/g for the auto combustion method, 66.7emu/g, 379.6Oe, and 17.3emu/g for the ceramic method, respectively. The difference in preparation methods and size of the grains causes interesting changes in electrical and magnetic properties.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physb.2014.04.055</doi><tpages>4</tpages></addata></record> |
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| subjects | Ac electrical conductivity Auto combustion Automobiles Automotive components Automotive engineering Automotive industry Band spectra Ceramic method Ceramics Combustion Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric constant Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Domain effects, magnetization curves, and hysteresis Exact sciences and technology Ferrite Magnetic properties Magnetic properties and materials Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects Permittivity (dielectric function) Physics Saturation magnetization |
| title | Structural, dielectric and magnetic properties of cobalt ferrite prepared using auto combustion and ceramic route |
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