Dielectric relaxation and conduction mechanism of cobalt ferrite nanoparticles
•Cobalt ferrite nanoparticles prepared by the auto combustion method.•Dielectric relaxation was explained by impedance spectroscopy.•Interfacial polarization plays important role in cobalt ferrite nanoparticles.•Overlap large polaron tunneling conduction is responsible for ac conductivity.•DC conduc...
Gespeichert in:
| Veröffentlicht in: | Journal of alloys and compounds 2014-12, Vol.615, p.899-905 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 905 |
|---|---|
| container_issue | |
| container_start_page | 899 |
| container_title | Journal of alloys and compounds |
| container_volume | 615 |
| creator | Panda, R.K. Muduli, R. Kar, S.K. Behera, D. |
| description | •Cobalt ferrite nanoparticles prepared by the auto combustion method.•Dielectric relaxation was explained by impedance spectroscopy.•Interfacial polarization plays important role in cobalt ferrite nanoparticles.•Overlap large polaron tunneling conduction is responsible for ac conductivity.•DC conductivity is mainly due to the small polaron conduction.
The electric transport behavior of nano cobalt ferrite was studied in details within frequency window of 100Hz and 1MHz in the range of temperature of 25–200°C. No grain relaxation was observed whereas interfaces (grain boundary and electrode surface contact) became the dominant conduction regions. Both ac and dc conduction mechanism was investigated thoroughly. Overlapping of large polaron tunneling (OLPT) mechanism was found to be responsible for ac conduction process. The value obtained for mobility (10−10cm2/Vs) of charge carriers indicated the possible small polaron hopping for dc conduction process. The dc resistivity data was fitted with Mott and Davis model and the derived parameters confirmed the dc conduction of non-adiabatic nature which was due to small polaron hopping in nano cobalt ferrite. |
| doi_str_mv | 10.1016/j.jallcom.2014.07.031 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1642254362</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0925838814016107</els_id><sourcerecordid>1642254362</sourcerecordid><originalsourceid>FETCH-LOGICAL-c438t-990006bd4e6ee67eca8d378fe59a2dd00ac402a186443d2918bf5a2ce53dc1933</originalsourceid><addsrcrecordid>eNqFkE-LFDEQxYMoOK5-BKEvgpdu86_T6ZPIqquw6GX3HGoq1ZghnYxJj-i3N-sMe_VUVPFe1asfY68FHwQX5t1hOECMmNdBcqEHPg1ciSdsJ-ykem3M_JTt-CzH3iprn7MXtR4452JWYse-fQwUCbcSsCsU4TdsIacOku8wJ3_Cf-1K-ANSqGuXlzbfQ9y6hUoJG3UJUj5C2QJGqi_ZswVipVeXesXuP3-6u_7S336_-Xr94bZHrezWz3MLYPZekyEyEyFYrya70DiD9J5zQM0lCGu0Vl7Owu6XESTSqDy24OqKvT3vPZb880R1c2uoSDFConyqThgt5aiVkU06nqVYcq2FFncsYYXyxwnuHvi5g7vwcw_8HJ9c49d8by4noCLEpUDCUB_N0k5GTRNvuvdnHbV_fwUqrmKghORDaWCdz-E_l_4CzmCJzA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1642254362</pqid></control><display><type>article</type><title>Dielectric relaxation and conduction mechanism of cobalt ferrite nanoparticles</title><source>Access via ScienceDirect (Elsevier)</source><creator>Panda, R.K. ; Muduli, R. ; Kar, S.K. ; Behera, D.</creator><creatorcontrib>Panda, R.K. ; Muduli, R. ; Kar, S.K. ; Behera, D.</creatorcontrib><description>•Cobalt ferrite nanoparticles prepared by the auto combustion method.•Dielectric relaxation was explained by impedance spectroscopy.•Interfacial polarization plays important role in cobalt ferrite nanoparticles.•Overlap large polaron tunneling conduction is responsible for ac conductivity.•DC conductivity is mainly due to the small polaron conduction.
The electric transport behavior of nano cobalt ferrite was studied in details within frequency window of 100Hz and 1MHz in the range of temperature of 25–200°C. No grain relaxation was observed whereas interfaces (grain boundary and electrode surface contact) became the dominant conduction regions. Both ac and dc conduction mechanism was investigated thoroughly. Overlapping of large polaron tunneling (OLPT) mechanism was found to be responsible for ac conduction process. The value obtained for mobility (10−10cm2/Vs) of charge carriers indicated the possible small polaron hopping for dc conduction process. The dc resistivity data was fitted with Mott and Davis model and the derived parameters confirmed the dc conduction of non-adiabatic nature which was due to small polaron hopping in nano cobalt ferrite.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2014.07.031</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>Cobalt ferrites ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Conduction ; Contact ; Dielectric loss and relaxation ; Dielectric properties of solids and liquids ; Dielectrics, piezoelectrics, and ferroelectrics and their properties ; Direct current ; Electrodes ; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures ; Electronic transport in multilayers, nanoscale materials and structures ; Exact sciences and technology ; Ferrites ; Grain boundaries ; Nanocrystalline materials ; Nanoparticles ; Nanostructure ; Physics ; Polaron ; Polarons ; Relaxation</subject><ispartof>Journal of alloys and compounds, 2014-12, Vol.615, p.899-905</ispartof><rights>2014 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c438t-990006bd4e6ee67eca8d378fe59a2dd00ac402a186443d2918bf5a2ce53dc1933</citedby><cites>FETCH-LOGICAL-c438t-990006bd4e6ee67eca8d378fe59a2dd00ac402a186443d2918bf5a2ce53dc1933</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2014.07.031$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28763770$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Panda, R.K.</creatorcontrib><creatorcontrib>Muduli, R.</creatorcontrib><creatorcontrib>Kar, S.K.</creatorcontrib><creatorcontrib>Behera, D.</creatorcontrib><title>Dielectric relaxation and conduction mechanism of cobalt ferrite nanoparticles</title><title>Journal of alloys and compounds</title><description>•Cobalt ferrite nanoparticles prepared by the auto combustion method.•Dielectric relaxation was explained by impedance spectroscopy.•Interfacial polarization plays important role in cobalt ferrite nanoparticles.•Overlap large polaron tunneling conduction is responsible for ac conductivity.•DC conductivity is mainly due to the small polaron conduction.
The electric transport behavior of nano cobalt ferrite was studied in details within frequency window of 100Hz and 1MHz in the range of temperature of 25–200°C. No grain relaxation was observed whereas interfaces (grain boundary and electrode surface contact) became the dominant conduction regions. Both ac and dc conduction mechanism was investigated thoroughly. Overlapping of large polaron tunneling (OLPT) mechanism was found to be responsible for ac conduction process. The value obtained for mobility (10−10cm2/Vs) of charge carriers indicated the possible small polaron hopping for dc conduction process. The dc resistivity data was fitted with Mott and Davis model and the derived parameters confirmed the dc conduction of non-adiabatic nature which was due to small polaron hopping in nano cobalt ferrite.</description><subject>Cobalt ferrites</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Conduction</subject><subject>Contact</subject><subject>Dielectric loss and relaxation</subject><subject>Dielectric properties of solids and liquids</subject><subject>Dielectrics, piezoelectrics, and ferroelectrics and their properties</subject><subject>Direct current</subject><subject>Electrodes</subject><subject>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</subject><subject>Electronic transport in multilayers, nanoscale materials and structures</subject><subject>Exact sciences and technology</subject><subject>Ferrites</subject><subject>Grain boundaries</subject><subject>Nanocrystalline materials</subject><subject>Nanoparticles</subject><subject>Nanostructure</subject><subject>Physics</subject><subject>Polaron</subject><subject>Polarons</subject><subject>Relaxation</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkE-LFDEQxYMoOK5-BKEvgpdu86_T6ZPIqquw6GX3HGoq1ZghnYxJj-i3N-sMe_VUVPFe1asfY68FHwQX5t1hOECMmNdBcqEHPg1ciSdsJ-ykem3M_JTt-CzH3iprn7MXtR4452JWYse-fQwUCbcSsCsU4TdsIacOku8wJ3_Cf-1K-ANSqGuXlzbfQ9y6hUoJG3UJUj5C2QJGqi_ZswVipVeXesXuP3-6u_7S336_-Xr94bZHrezWz3MLYPZekyEyEyFYrya70DiD9J5zQM0lCGu0Vl7Owu6XESTSqDy24OqKvT3vPZb880R1c2uoSDFConyqThgt5aiVkU06nqVYcq2FFncsYYXyxwnuHvi5g7vwcw_8HJ9c49d8by4noCLEpUDCUB_N0k5GTRNvuvdnHbV_fwUqrmKghORDaWCdz-E_l_4CzmCJzA</recordid><startdate>20141205</startdate><enddate>20141205</enddate><creator>Panda, R.K.</creator><creator>Muduli, R.</creator><creator>Kar, S.K.</creator><creator>Behera, D.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20141205</creationdate><title>Dielectric relaxation and conduction mechanism of cobalt ferrite nanoparticles</title><author>Panda, R.K. ; Muduli, R. ; Kar, S.K. ; Behera, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c438t-990006bd4e6ee67eca8d378fe59a2dd00ac402a186443d2918bf5a2ce53dc1933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Cobalt ferrites</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Conduction</topic><topic>Contact</topic><topic>Dielectric loss and relaxation</topic><topic>Dielectric properties of solids and liquids</topic><topic>Dielectrics, piezoelectrics, and ferroelectrics and their properties</topic><topic>Direct current</topic><topic>Electrodes</topic><topic>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</topic><topic>Electronic transport in multilayers, nanoscale materials and structures</topic><topic>Exact sciences and technology</topic><topic>Ferrites</topic><topic>Grain boundaries</topic><topic>Nanocrystalline materials</topic><topic>Nanoparticles</topic><topic>Nanostructure</topic><topic>Physics</topic><topic>Polaron</topic><topic>Polarons</topic><topic>Relaxation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Panda, R.K.</creatorcontrib><creatorcontrib>Muduli, R.</creatorcontrib><creatorcontrib>Kar, S.K.</creatorcontrib><creatorcontrib>Behera, D.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Panda, R.K.</au><au>Muduli, R.</au><au>Kar, S.K.</au><au>Behera, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dielectric relaxation and conduction mechanism of cobalt ferrite nanoparticles</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2014-12-05</date><risdate>2014</risdate><volume>615</volume><spage>899</spage><epage>905</epage><pages>899-905</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>•Cobalt ferrite nanoparticles prepared by the auto combustion method.•Dielectric relaxation was explained by impedance spectroscopy.•Interfacial polarization plays important role in cobalt ferrite nanoparticles.•Overlap large polaron tunneling conduction is responsible for ac conductivity.•DC conductivity is mainly due to the small polaron conduction.
The electric transport behavior of nano cobalt ferrite was studied in details within frequency window of 100Hz and 1MHz in the range of temperature of 25–200°C. No grain relaxation was observed whereas interfaces (grain boundary and electrode surface contact) became the dominant conduction regions. Both ac and dc conduction mechanism was investigated thoroughly. Overlapping of large polaron tunneling (OLPT) mechanism was found to be responsible for ac conduction process. The value obtained for mobility (10−10cm2/Vs) of charge carriers indicated the possible small polaron hopping for dc conduction process. The dc resistivity data was fitted with Mott and Davis model and the derived parameters confirmed the dc conduction of non-adiabatic nature which was due to small polaron hopping in nano cobalt ferrite.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2014.07.031</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0925-8388 |
| ispartof | Journal of alloys and compounds, 2014-12, Vol.615, p.899-905 |
| issn | 0925-8388 1873-4669 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1642254362 |
| source | Access via ScienceDirect (Elsevier) |
| subjects | Cobalt ferrites Condensed matter: electronic structure, electrical, magnetic, and optical properties Conduction Contact Dielectric loss and relaxation Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Direct current Electrodes Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronic transport in multilayers, nanoscale materials and structures Exact sciences and technology Ferrites Grain boundaries Nanocrystalline materials Nanoparticles Nanostructure Physics Polaron Polarons Relaxation |
| title | Dielectric relaxation and conduction mechanism of cobalt ferrite nanoparticles |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-26T15%3A08%3A19IST&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=Dielectric%20relaxation%20and%20conduction%20mechanism%20of%20cobalt%20ferrite%20nanoparticles&rft.jtitle=Journal%20of%20alloys%20and%20compounds&rft.au=Panda,%20R.K.&rft.date=2014-12-05&rft.volume=615&rft.spage=899&rft.epage=905&rft.pages=899-905&rft.issn=0925-8388&rft.eissn=1873-4669&rft_id=info:doi/10.1016/j.jallcom.2014.07.031&rft_dat=%3Cproquest_cross%3E1642254362%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=1642254362&rft_id=info:pmid/&rft_els_id=S0925838814016107&rfr_iscdi=true |