{"title":"溶胶-凝胶-熔盐复合法制备La0.7Sr0.3MnO3纳米棒及其磁性能","authors":"Shu-yan QI, Jing FENG, Xiao-dong XU, Jing-ping WANG, Xiang-yu HOU, Mi-lin ZHANG","doi":"10.1016/S1005-9040(09)60003-9","DOIUrl":null,"url":null,"abstract":"<div><p>La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub>(LSMO) nanorods were synthesized by a method combining sol-gel with molten salts at 950 °C for 10 h, which employed KCl+NaCl(mass ratio 4:1) as eutectic molten salts. The morphologies and magnetic properties of the resulting LSMO nanorods were investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), and vibrating sample magnetometer(VSM) measurements. It was found that the obtained perovskite manganite LSMO was a uniform nanorod with a diameter of about 50 nm and a length of longer than 500 nm. The Curie temperature(<em>T<sub>c</sub></em>) of the LSMO nanorod used here was 262 K, much lower than that of bulky single crystal LSMO(360 K). The low Curie temperature might be a result of the great disorder near the grain boundary, which could be observed clearly from the TEM picture.</p></div>","PeriodicalId":9785,"journal":{"name":"Chemical Research in Chinese Universities","volume":"24 6","pages":"Pages 672-674"},"PeriodicalIF":3.1000,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-9040(09)60003-9","citationCount":"2","resultStr":"{\"title\":\"Preparation and Magnetic Property of La0.7Sr0.3MnO3 Nanorod by Combination Sol-Gel with Molten Salt\",\"authors\":\"Shu-yan QI, Jing FENG, Xiao-dong XU, Jing-ping WANG, Xiang-yu HOU, Mi-lin ZHANG\",\"doi\":\"10.1016/S1005-9040(09)60003-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub>(LSMO) nanorods were synthesized by a method combining sol-gel with molten salts at 950 °C for 10 h, which employed KCl+NaCl(mass ratio 4:1) as eutectic molten salts. The morphologies and magnetic properties of the resulting LSMO nanorods were investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), and vibrating sample magnetometer(VSM) measurements. It was found that the obtained perovskite manganite LSMO was a uniform nanorod with a diameter of about 50 nm and a length of longer than 500 nm. The Curie temperature(<em>T<sub>c</sub></em>) of the LSMO nanorod used here was 262 K, much lower than that of bulky single crystal LSMO(360 K). The low Curie temperature might be a result of the great disorder near the grain boundary, which could be observed clearly from the TEM picture.</p></div>\",\"PeriodicalId\":9785,\"journal\":{\"name\":\"Chemical Research in Chinese Universities\",\"volume\":\"24 6\",\"pages\":\"Pages 672-674\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2008-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1005-9040(09)60003-9\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Research in Chinese Universities\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1005904009600039\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Research in Chinese Universities","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1005904009600039","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Preparation and Magnetic Property of La0.7Sr0.3MnO3 Nanorod by Combination Sol-Gel with Molten Salt
La0.7Sr0.3MnO3(LSMO) nanorods were synthesized by a method combining sol-gel with molten salts at 950 °C for 10 h, which employed KCl+NaCl(mass ratio 4:1) as eutectic molten salts. The morphologies and magnetic properties of the resulting LSMO nanorods were investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), and vibrating sample magnetometer(VSM) measurements. It was found that the obtained perovskite manganite LSMO was a uniform nanorod with a diameter of about 50 nm and a length of longer than 500 nm. The Curie temperature(Tc) of the LSMO nanorod used here was 262 K, much lower than that of bulky single crystal LSMO(360 K). The low Curie temperature might be a result of the great disorder near the grain boundary, which could be observed clearly from the TEM picture.
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The journal publishes research articles, letters/communications and reviews written by faculty members, researchers and postgraduates in universities, colleges and research institutes all over China and overseas. It reports the latest and most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across subdisciplines.
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