Influence of lattice distortion on the Curie temperature and spin–phonon coupling in LaMn0.5Co0.5O3
Two distinct ferromagnetic phases of LaMn(0.5)Co(0.5)O(3) having monoclinic structure with distinct physical properties have been studied. The ferromagnetic ordering temperature T(c) is found to be different for both the phases. The origin of such contrasting characteristics is assigned to the chang...
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| Veröffentlicht in: | Journal of physics. Condensed matter 2010-09, Vol.22 (34), p.346006-346006 |
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| container_issue | 34 |
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| container_title | Journal of physics. Condensed matter |
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| creator | Viswanathan, M Anil Kumar, P S Bhadram, Venkata Srinu Narayana, Chandrabhas Bera, A K Yusuf, S M |
| description | Two distinct ferromagnetic phases of LaMn(0.5)Co(0.5)O(3) having monoclinic structure with distinct physical properties have been studied. The ferromagnetic ordering temperature T(c) is found to be different for both the phases. The origin of such contrasting characteristics is assigned to the changes in the distance(s) and angle(s) between Mn-O-Co resulting from distortions observed from neutron diffraction studies. Investigations on the temperature dependent Raman spectroscopy provide evidence for such structural characteristics, which affects the exchange interaction. The difference in B-site ordering which is evident from the neutron diffraction is also responsible for the difference in T(c). Raman scattering suggests the presence of spin-phonon coupling for both the phases around the T(c). Electrical transport properties of both the phases have been investigated based on the lattice distortion. |
| doi_str_mv | 10.1088/0953-8984/22/34/346006 |
| format | Article |
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The ferromagnetic ordering temperature T(c) is found to be different for both the phases. The origin of such contrasting characteristics is assigned to the changes in the distance(s) and angle(s) between Mn-O-Co resulting from distortions observed from neutron diffraction studies. Investigations on the temperature dependent Raman spectroscopy provide evidence for such structural characteristics, which affects the exchange interaction. The difference in B-site ordering which is evident from the neutron diffraction is also responsible for the difference in T(c). Raman scattering suggests the presence of spin-phonon coupling for both the phases around the T(c). 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Condensed matter</title><addtitle>J Phys Condens Matter</addtitle><description>Two distinct ferromagnetic phases of LaMn(0.5)Co(0.5)O(3) having monoclinic structure with distinct physical properties have been studied. The ferromagnetic ordering temperature T(c) is found to be different for both the phases. The origin of such contrasting characteristics is assigned to the changes in the distance(s) and angle(s) between Mn-O-Co resulting from distortions observed from neutron diffraction studies. Investigations on the temperature dependent Raman spectroscopy provide evidence for such structural characteristics, which affects the exchange interaction. The difference in B-site ordering which is evident from the neutron diffraction is also responsible for the difference in T(c). Raman scattering suggests the presence of spin-phonon coupling for both the phases around the T(c). Electrical transport properties of both the phases have been investigated based on the lattice distortion.</description><subject>Condensed matter</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Curie temperature</subject><subject>Distortion</subject><subject>Exact sciences and technology</subject><subject>Joining</subject><subject>Lattices</subject><subject>Magnetic properties and materials</subject><subject>Neutron diffraction</subject><subject>Order disorder</subject><subject>Phases</subject><subject>Physics</subject><subject>Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)</subject><issn>0953-8984</issn><issn>1361-648X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqN0b1uFDEQB3ALgciR5BUiNxHV3o0_11tGpwCRDqUBic7yem1itGcva2-RLu_AG_Ik-HRHKKBAGo0t-TdT-I_QFYE1AaU20AnWqE7xDaUbxmtJAPkCrQiTpJFcfXmJVs_oDL3J-RsAcMX4a3RGCQdGW7JC7i76cXHROpw8Hk0poV6HkEuaS0gR1yoPDm-XOThc3H5ysynL7LCJA85TiD-ffkwPKVZn0zKNIX7FIeKd-RhhLbaptnt2gV55M2Z3eTrP0ed3t5-2H5rd_fu77c2uCRygNF6ogVALzLfKetpLygfiu960hIDpgTPvemFs30uoDTrHB-gdkS0xjDrLztHb495pTt8Xl4veh2zdOJro0pK1Ei1VHRHyP6SQHYWOVXl1kku_d4Oe5rA386P-_YcVXJ-AydaMfjbRhvzHMaJaIUR15OhCmp5fCehDnvoQlT5EpSnVjOtjnnWm-Xvm31ZPg2e_AD-snl8</recordid><startdate>20100901</startdate><enddate>20100901</enddate><creator>Viswanathan, M</creator><creator>Anil Kumar, P S</creator><creator>Bhadram, Venkata Srinu</creator><creator>Narayana, Chandrabhas</creator><creator>Bera, A K</creator><creator>Yusuf, S M</creator><general>IOP Publishing</general><general>Institute of Physics</general><scope>IQODW</scope><scope>NPM</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>20100901</creationdate><title>Influence of lattice distortion on the Curie temperature and spin–phonon coupling in LaMn0.5Co0.5O3</title><author>Viswanathan, M ; Anil Kumar, P S ; Bhadram, Venkata Srinu ; Narayana, Chandrabhas ; Bera, A K ; Yusuf, S M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i400t-f58d12c03f78cf2b624d1f9ba7110ab043feb5acbb60cbb09e4d0be1671a32ec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Condensed matter</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Curie temperature</topic><topic>Distortion</topic><topic>Exact sciences and technology</topic><topic>Joining</topic><topic>Lattices</topic><topic>Magnetic properties and materials</topic><topic>Neutron diffraction</topic><topic>Order disorder</topic><topic>Phases</topic><topic>Physics</topic><topic>Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Viswanathan, M</creatorcontrib><creatorcontrib>Anil Kumar, P S</creatorcontrib><creatorcontrib>Bhadram, Venkata Srinu</creatorcontrib><creatorcontrib>Narayana, Chandrabhas</creatorcontrib><creatorcontrib>Bera, A K</creatorcontrib><creatorcontrib>Yusuf, S M</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of physics. Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Viswanathan, M</au><au>Anil Kumar, P S</au><au>Bhadram, Venkata Srinu</au><au>Narayana, Chandrabhas</au><au>Bera, A K</au><au>Yusuf, S M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of lattice distortion on the Curie temperature and spin–phonon coupling in LaMn0.5Co0.5O3</atitle><jtitle>Journal of physics. Condensed matter</jtitle><addtitle>J Phys Condens Matter</addtitle><date>2010-09-01</date><risdate>2010</risdate><volume>22</volume><issue>34</issue><spage>346006</spage><epage>346006</epage><pages>346006-346006</pages><issn>0953-8984</issn><eissn>1361-648X</eissn><coden>JCOMEL</coden><abstract>Two distinct ferromagnetic phases of LaMn(0.5)Co(0.5)O(3) having monoclinic structure with distinct physical properties have been studied. The ferromagnetic ordering temperature T(c) is found to be different for both the phases. The origin of such contrasting characteristics is assigned to the changes in the distance(s) and angle(s) between Mn-O-Co resulting from distortions observed from neutron diffraction studies. Investigations on the temperature dependent Raman spectroscopy provide evidence for such structural characteristics, which affects the exchange interaction. The difference in B-site ordering which is evident from the neutron diffraction is also responsible for the difference in T(c). Raman scattering suggests the presence of spin-phonon coupling for both the phases around the T(c). Electrical transport properties of both the phases have been investigated based on the lattice distortion.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><pmid>21403271</pmid><doi>10.1088/0953-8984/22/34/346006</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Condensed matter Condensed matter: electronic structure, electrical, magnetic, and optical properties Curie temperature Distortion Exact sciences and technology Joining Lattices Magnetic properties and materials Neutron diffraction Order disorder Phases Physics Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.) |
| title | Influence of lattice distortion on the Curie temperature and spin–phonon coupling in LaMn0.5Co0.5O3 |
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