{"title":"Nd0.7Sr0.3CoO3的光磁性研究","authors":"D. Bahadur, S. Asthana, C. Carbonera, J. Létard","doi":"10.1109/INTMAG.2006.374863","DOIUrl":null,"url":null,"abstract":"The partial substitution of rare earth ion by bivalent alkaline earth ion in perovskite oxide of the type LnMO<sub>3</sub> (Ln = Rare earth ion, M = Transition metal ion) generates mixed valence states of M<sup>3+</sup> and M<sup>4+</sup> has been extensively studied. This article investigate the photo magnetic effects in the system, Nd<sub>0.7</sub>Sr<sub>0.3</sub>CoO<sub>3</sub>. This composition is known to exhibit interesting magnetic properties at low temperatures . The results obtained earlier suggest an electronic phase separation due to coexistence of ferromagnetic and antiferromagnetic interaction which competes and causes frustration. Due to the substitution of Sr<sup>2+</sup> at Neodymium site, Co<sup>3+</sup> and Co<sup>4+</sup> are generated which can in principle exist in either low, intermediate or high spin states. The intermediate states of Co<sup>3+</sup> and Co<sup>4+</sup> ion , which are known to exist in these cobaltites are Jahn Teller ion. These ions and Nd<sup>3+</sup> (L = 6) having large orbital moments may induce a large anisotropy.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photomagnetism Studies in Nd0.7Sr0.3CoO3\",\"authors\":\"D. Bahadur, S. Asthana, C. Carbonera, J. Létard\",\"doi\":\"10.1109/INTMAG.2006.374863\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The partial substitution of rare earth ion by bivalent alkaline earth ion in perovskite oxide of the type LnMO<sub>3</sub> (Ln = Rare earth ion, M = Transition metal ion) generates mixed valence states of M<sup>3+</sup> and M<sup>4+</sup> has been extensively studied. This article investigate the photo magnetic effects in the system, Nd<sub>0.7</sub>Sr<sub>0.3</sub>CoO<sub>3</sub>. This composition is known to exhibit interesting magnetic properties at low temperatures . The results obtained earlier suggest an electronic phase separation due to coexistence of ferromagnetic and antiferromagnetic interaction which competes and causes frustration. Due to the substitution of Sr<sup>2+</sup> at Neodymium site, Co<sup>3+</sup> and Co<sup>4+</sup> are generated which can in principle exist in either low, intermediate or high spin states. The intermediate states of Co<sup>3+</sup> and Co<sup>4+</sup> ion , which are known to exist in these cobaltites are Jahn Teller ion. These ions and Nd<sup>3+</sup> (L = 6) having large orbital moments may induce a large anisotropy.\",\"PeriodicalId\":262607,\"journal\":{\"name\":\"INTERMAG 2006 - IEEE International Magnetics Conference\",\"volume\":\"7 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-05-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"INTERMAG 2006 - IEEE International Magnetics Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/INTMAG.2006.374863\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"INTERMAG 2006 - IEEE International Magnetics Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/INTMAG.2006.374863","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The partial substitution of rare earth ion by bivalent alkaline earth ion in perovskite oxide of the type LnMO3 (Ln = Rare earth ion, M = Transition metal ion) generates mixed valence states of M3+ and M4+ has been extensively studied. This article investigate the photo magnetic effects in the system, Nd0.7Sr0.3CoO3. This composition is known to exhibit interesting magnetic properties at low temperatures . The results obtained earlier suggest an electronic phase separation due to coexistence of ferromagnetic and antiferromagnetic interaction which competes and causes frustration. Due to the substitution of Sr2+ at Neodymium site, Co3+ and Co4+ are generated which can in principle exist in either low, intermediate or high spin states. The intermediate states of Co3+ and Co4+ ion , which are known to exist in these cobaltites are Jahn Teller ion. These ions and Nd3+ (L = 6) having large orbital moments may induce a large anisotropy.
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