High pressure study on maganites-the double exchange and polaron effects
We have examined the influence of oxygen-isotope on the pressure effects on the metal-insulator (M-I) transition in La 0.65Ca 0.35MnO 3 (A) and on both the M-I and charge ordering (CO) transitions in La 0.57Ca 0.43MnO 3 (B) under hydrostatic pressures. The pressure was found to enhance Tc at differe...
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| Veröffentlicht in: | Physica. C, Superconductivity Superconductivity, 2000, Vol.341, p.773-774 |
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| container_title | Physica. C, Superconductivity |
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| creator | Wang, Y.S. Heilman, A.K. Lorenz, B. Xue, Y.Y. Chu, C.W. Franck, J.P. Chen, W.M. |
| description | We have examined the influence of oxygen-isotope on the pressure effects on the metal-insulator (M-I) transition in La
0.65Ca
0.35MnO
3 (A) and on both the M-I and charge ordering (CO) transitions in La
0.57Ca
0.43MnO
3 (B) under hydrostatic pressures. The pressure was found to enhance Tc at different rates, depending on the O-isotopic mass of the sample. The greater dlnTc/dP observed in the O-18 sample could be understood qualitatively in terms of the double exchange and the band reduction effect of polarons. In the B-samples, the situation is much more complex. Pressure enhances Tc linearly at rates independent of the O-isotopic mass but varies Tco nonlinearly in a complex way. The thermal hysteresis of the CO transition diminishes with increase in pressure suggesting the suppression of the first order CO transition under pressure in both isotopes. |
| doi_str_mv | 10.1016/S0921-4534(00)00686-9 |
| format | Article |
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0.65Ca
0.35MnO
3 (A) and on both the M-I and charge ordering (CO) transitions in La
0.57Ca
0.43MnO
3 (B) under hydrostatic pressures. The pressure was found to enhance Tc at different rates, depending on the O-isotopic mass of the sample. The greater dlnTc/dP observed in the O-18 sample could be understood qualitatively in terms of the double exchange and the band reduction effect of polarons. In the B-samples, the situation is much more complex. Pressure enhances Tc linearly at rates independent of the O-isotopic mass but varies Tco nonlinearly in a complex way. The thermal hysteresis of the CO transition diminishes with increase in pressure suggesting the suppression of the first order CO transition under pressure in both isotopes.</description><identifier>ISSN: 0921-4534</identifier><identifier>EISSN: 1873-2143</identifier><identifier>DOI: 10.1016/S0921-4534(00)00686-9</identifier><language>eng</language><publisher>Elsevier B.V</publisher><ispartof>Physica. C, Superconductivity, 2000, Vol.341, p.773-774</ispartof><rights>2001</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c288t-fd2e6f1a919d2570a3d631090533d3a123b36e3879178c06b7680575194c9e153</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0921-4534(00)00686-9$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,4022,27922,27923,27924,45994</link.rule.ids></links><search><creatorcontrib>Wang, Y.S.</creatorcontrib><creatorcontrib>Heilman, A.K.</creatorcontrib><creatorcontrib>Lorenz, B.</creatorcontrib><creatorcontrib>Xue, Y.Y.</creatorcontrib><creatorcontrib>Chu, C.W.</creatorcontrib><creatorcontrib>Franck, J.P.</creatorcontrib><creatorcontrib>Chen, W.M.</creatorcontrib><title>High pressure study on maganites-the double exchange and polaron effects</title><title>Physica. C, Superconductivity</title><description>We have examined the influence of oxygen-isotope on the pressure effects on the metal-insulator (M-I) transition in La
0.65Ca
0.35MnO
3 (A) and on both the M-I and charge ordering (CO) transitions in La
0.57Ca
0.43MnO
3 (B) under hydrostatic pressures. The pressure was found to enhance Tc at different rates, depending on the O-isotopic mass of the sample. The greater dlnTc/dP observed in the O-18 sample could be understood qualitatively in terms of the double exchange and the band reduction effect of polarons. In the B-samples, the situation is much more complex. Pressure enhances Tc linearly at rates independent of the O-isotopic mass but varies Tco nonlinearly in a complex way. The thermal hysteresis of the CO transition diminishes with increase in pressure suggesting the suppression of the first order CO transition under pressure in both isotopes.</description><issn>0921-4534</issn><issn>1873-2143</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNqFkEFLwzAYhoMoOKc_QchJ9FD9kjRpcxIZ6oSBB_UcsuTrFunamrTi_r11E69-l-_yvC-8DyHnDK4ZMHXzApqzLJcivwS4AlClyvQBmbCyEBlnuTgkkz_kmJyk9A7jMc0mZD4PqzXtIqY0RKSpH_yWtg3d2JVtQo8p69dIfTssa6T45da2WSG1jaddW9s4klhV6Pp0So4qWyc8-_1T8vZw_zqbZ4vnx6fZ3SJzvCz7rPIcVcWsZtpzWYAVXgkGGqQQXljGxVIoFGWhWVE6UMtClSALyXTuNDIppuRi39vF9mPA1JtNSA7r2jbYDsnwQsqc63IE5R50sU0pYmW6GDY2bg0D8-PN7LyZHykGwOy8GT3mbvc5HFd8BowmuYCNQx_iONT4NvzT8A0I4XN8</recordid><startdate>2000</startdate><enddate>2000</enddate><creator>Wang, Y.S.</creator><creator>Heilman, A.K.</creator><creator>Lorenz, B.</creator><creator>Xue, Y.Y.</creator><creator>Chu, C.W.</creator><creator>Franck, J.P.</creator><creator>Chen, W.M.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>2000</creationdate><title>High pressure study on maganites-the double exchange and polaron effects</title><author>Wang, Y.S. ; Heilman, A.K. ; Lorenz, B. ; Xue, Y.Y. ; Chu, C.W. ; Franck, J.P. ; Chen, W.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c288t-fd2e6f1a919d2570a3d631090533d3a123b36e3879178c06b7680575194c9e153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Y.S.</creatorcontrib><creatorcontrib>Heilman, A.K.</creatorcontrib><creatorcontrib>Lorenz, B.</creatorcontrib><creatorcontrib>Xue, Y.Y.</creatorcontrib><creatorcontrib>Chu, C.W.</creatorcontrib><creatorcontrib>Franck, J.P.</creatorcontrib><creatorcontrib>Chen, W.M.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Physica. C, Superconductivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Y.S.</au><au>Heilman, A.K.</au><au>Lorenz, B.</au><au>Xue, Y.Y.</au><au>Chu, C.W.</au><au>Franck, J.P.</au><au>Chen, W.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>High pressure study on maganites-the double exchange and polaron effects</atitle><jtitle>Physica. C, Superconductivity</jtitle><date>2000</date><risdate>2000</risdate><volume>341</volume><spage>773</spage><epage>774</epage><pages>773-774</pages><issn>0921-4534</issn><eissn>1873-2143</eissn><abstract>We have examined the influence of oxygen-isotope on the pressure effects on the metal-insulator (M-I) transition in La
0.65Ca
0.35MnO
3 (A) and on both the M-I and charge ordering (CO) transitions in La
0.57Ca
0.43MnO
3 (B) under hydrostatic pressures. The pressure was found to enhance Tc at different rates, depending on the O-isotopic mass of the sample. The greater dlnTc/dP observed in the O-18 sample could be understood qualitatively in terms of the double exchange and the band reduction effect of polarons. In the B-samples, the situation is much more complex. Pressure enhances Tc linearly at rates independent of the O-isotopic mass but varies Tco nonlinearly in a complex way. The thermal hysteresis of the CO transition diminishes with increase in pressure suggesting the suppression of the first order CO transition under pressure in both isotopes.</abstract><pub>Elsevier B.V</pub><doi>10.1016/S0921-4534(00)00686-9</doi><tpages>2</tpages></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| title | High pressure study on maganites-the double exchange and polaron effects |
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