High temperature Seebeck coefficient, small-polaron conduction and work function of LiMn1.5Ni0.5O4 thin films
We report on the high temperature Seebeck coefficient, conduction mechanism and room temperature work function of LiMn1.5Ni0.5O4 thin film prepared using the radio frequency sputtering technique. Cubic spinel LiMn1.5Ni0.5O4 thin film exhibits a room temperature average work function value of 4.94 eV...
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| Veröffentlicht in: | Journal of physics. D, Applied physics Applied physics, 2020-11, Vol.53 (47) |
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| container_title | Journal of physics. D, Applied physics |
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| creator | Subash, Sruthy Vaiyapuri, Vijay Navaneethan, M Sivalingam, Yuvaraj Kamala Bharathi, K |
| description | We report on the high temperature Seebeck coefficient, conduction mechanism and room temperature work function of LiMn1.5Ni0.5O4 thin film prepared using the radio frequency sputtering technique. Cubic spinel LiMn1.5Ni0.5O4 thin film exhibits a room temperature average work function value of 4.94 eV. DC electrical conductivity exhibits a small-polaron hopping mechanism with the activation energy of 0.47 eV. The polaron radius, inverse localization length and the Debye temperature values of LiMn1.5Ni0.5O4 thin films are predicted using the variable range hopping model and Raman studies. The Seebeck coefficient and the power factor values for the LiMn1.5Ni0.5O4 thin film is seen to vary from −1000 to −600 μV K−1 and 0.09 to 0.5 μW mK−2, respectively, in the temperature range of 420 to 560 K. Electrical transport studies reveal the fact that the LiMn1.5Ni0.5O4 thin film posseses n type charge carriers with a high Seebeck coefficient, high power factor and small-polaron hopping conduction mechanism in the temperature range of 420-560 K. |
| doi_str_mv | 10.1088/1361-6463/abac2f |
| format | Article |
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Cubic spinel LiMn1.5Ni0.5O4 thin film exhibits a room temperature average work function value of 4.94 eV. DC electrical conductivity exhibits a small-polaron hopping mechanism with the activation energy of 0.47 eV. The polaron radius, inverse localization length and the Debye temperature values of LiMn1.5Ni0.5O4 thin films are predicted using the variable range hopping model and Raman studies. The Seebeck coefficient and the power factor values for the LiMn1.5Ni0.5O4 thin film is seen to vary from −1000 to −600 μV K−1 and 0.09 to 0.5 μW mK−2, respectively, in the temperature range of 420 to 560 K. Electrical transport studies reveal the fact that the LiMn1.5Ni0.5O4 thin film posseses n type charge carriers with a high Seebeck coefficient, high power factor and small-polaron hopping conduction mechanism in the temperature range of 420-560 K.</description><identifier>ISSN: 0022-3727</identifier><identifier>EISSN: 1361-6463</identifier><identifier>DOI: 10.1088/1361-6463/abac2f</identifier><identifier>CODEN: JPAPBE</identifier><language>eng</language><publisher>IOP Publishing</publisher><subject>conductivity ; lithium manganese nickel oxide ; seebeck coefficient ; work function</subject><ispartof>Journal of physics. 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D, Applied physics</title><addtitle>JPhysD</addtitle><addtitle>J. Phys. D: Appl. Phys</addtitle><description>We report on the high temperature Seebeck coefficient, conduction mechanism and room temperature work function of LiMn1.5Ni0.5O4 thin film prepared using the radio frequency sputtering technique. Cubic spinel LiMn1.5Ni0.5O4 thin film exhibits a room temperature average work function value of 4.94 eV. DC electrical conductivity exhibits a small-polaron hopping mechanism with the activation energy of 0.47 eV. The polaron radius, inverse localization length and the Debye temperature values of LiMn1.5Ni0.5O4 thin films are predicted using the variable range hopping model and Raman studies. The Seebeck coefficient and the power factor values for the LiMn1.5Ni0.5O4 thin film is seen to vary from −1000 to −600 μV K−1 and 0.09 to 0.5 μW mK−2, respectively, in the temperature range of 420 to 560 K. Electrical transport studies reveal the fact that the LiMn1.5Ni0.5O4 thin film posseses n type charge carriers with a high Seebeck coefficient, high power factor and small-polaron hopping conduction mechanism in the temperature range of 420-560 K.</description><subject>conductivity</subject><subject>lithium manganese nickel oxide</subject><subject>seebeck coefficient</subject><subject>work function</subject><issn>0022-3727</issn><issn>1361-6463</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqVjz9vwjAUxC3USqTQvaM_AAnPCQnZq1YM_TPAbhnzXB44dmQ76tdvIqrune70uxvuGHsSUAho27WoGpE3m6Zaq6PSpZmx7A_dsQygLPNqW27n7CHGCwDUTSsy1u3o68wTdj0GlYaAfI94RH3l2qMxpAldWvHYKWvz3lsVvBsjdxp0otEqd-LfPly5GdyNeMPf6N2Jov4gKOrPDU9nctyQ7eKS3RtlIz7-6oKtXl8Oz7ucfC8vfghupFKAnC7Jab-c9svbpeqf9R_aklPv</recordid><startdate>20201118</startdate><enddate>20201118</enddate><creator>Subash, Sruthy</creator><creator>Vaiyapuri, Vijay</creator><creator>Navaneethan, M</creator><creator>Sivalingam, Yuvaraj</creator><creator>Kamala Bharathi, K</creator><general>IOP Publishing</general><scope/><orcidid>https://orcid.org/0000-0002-8466-9400</orcidid></search><sort><creationdate>20201118</creationdate><title>High temperature Seebeck coefficient, small-polaron conduction and work function of LiMn1.5Ni0.5O4 thin films</title><author>Subash, Sruthy ; Vaiyapuri, Vijay ; Navaneethan, M ; Sivalingam, Yuvaraj ; Kamala Bharathi, K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-iop_journals_10_1088_1361_6463_abac2f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>conductivity</topic><topic>lithium manganese nickel oxide</topic><topic>seebeck coefficient</topic><topic>work function</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Subash, Sruthy</creatorcontrib><creatorcontrib>Vaiyapuri, Vijay</creatorcontrib><creatorcontrib>Navaneethan, M</creatorcontrib><creatorcontrib>Sivalingam, Yuvaraj</creatorcontrib><creatorcontrib>Kamala Bharathi, K</creatorcontrib><jtitle>Journal of physics. D, Applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Subash, Sruthy</au><au>Vaiyapuri, Vijay</au><au>Navaneethan, M</au><au>Sivalingam, Yuvaraj</au><au>Kamala Bharathi, K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>High temperature Seebeck coefficient, small-polaron conduction and work function of LiMn1.5Ni0.5O4 thin films</atitle><jtitle>Journal of physics. D, Applied physics</jtitle><stitle>JPhysD</stitle><addtitle>J. Phys. D: Appl. Phys</addtitle><date>2020-11-18</date><risdate>2020</risdate><volume>53</volume><issue>47</issue><issn>0022-3727</issn><eissn>1361-6463</eissn><coden>JPAPBE</coden><abstract>We report on the high temperature Seebeck coefficient, conduction mechanism and room temperature work function of LiMn1.5Ni0.5O4 thin film prepared using the radio frequency sputtering technique. Cubic spinel LiMn1.5Ni0.5O4 thin film exhibits a room temperature average work function value of 4.94 eV. DC electrical conductivity exhibits a small-polaron hopping mechanism with the activation energy of 0.47 eV. The polaron radius, inverse localization length and the Debye temperature values of LiMn1.5Ni0.5O4 thin films are predicted using the variable range hopping model and Raman studies. The Seebeck coefficient and the power factor values for the LiMn1.5Ni0.5O4 thin film is seen to vary from −1000 to −600 μV K−1 and 0.09 to 0.5 μW mK−2, respectively, in the temperature range of 420 to 560 K. Electrical transport studies reveal the fact that the LiMn1.5Ni0.5O4 thin film posseses n type charge carriers with a high Seebeck coefficient, high power factor and small-polaron hopping conduction mechanism in the temperature range of 420-560 K.</abstract><pub>IOP Publishing</pub><doi>10.1088/1361-6463/abac2f</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-8466-9400</orcidid></addata></record> |
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| subjects | conductivity lithium manganese nickel oxide seebeck coefficient work function |
| title | High temperature Seebeck coefficient, small-polaron conduction and work function of LiMn1.5Ni0.5O4 thin films |
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