{"title":"高性能磁性制冷剂的发展及室温磁冷却的最新趋势","authors":"K. Fukamichi, A. Fujita","doi":"10.2221/JCSJ.39.314","DOIUrl":null,"url":null,"abstract":"The development of new high-performance refrigerants has been highly desired from the viewpoints of energy efficiency and environmental safety. Recently, we developed promising magnetic refrigerant compounds La(Fe1-xSix)13 (0.86≤x≤0.90), that show the first-order of itinerant-electron metamagnetic transition from the paramagnetic state to the ferromagnetic state in applied magnetic fields. By adjusting the hydrogen concentration in La(Fe1-xSix)13Hy, the Curie temperature TC and the working temperature for cooling are controlled covering room temperature. Furthermore, the thermal conductivity of the present compounds is excellent. It should also be emphasized that the elements of the present compounds are very cheap economically and completely harmless to humans.","PeriodicalId":285677,"journal":{"name":"Teion Kogaku (journal of The Cryogenic Society of Japan)","volume":"278 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development of High-performance Magnetic Refrigerants and Recent Trend in Room-temperature Magnetic Cooling\",\"authors\":\"K. Fukamichi, A. Fujita\",\"doi\":\"10.2221/JCSJ.39.314\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The development of new high-performance refrigerants has been highly desired from the viewpoints of energy efficiency and environmental safety. Recently, we developed promising magnetic refrigerant compounds La(Fe1-xSix)13 (0.86≤x≤0.90), that show the first-order of itinerant-electron metamagnetic transition from the paramagnetic state to the ferromagnetic state in applied magnetic fields. By adjusting the hydrogen concentration in La(Fe1-xSix)13Hy, the Curie temperature TC and the working temperature for cooling are controlled covering room temperature. Furthermore, the thermal conductivity of the present compounds is excellent. It should also be emphasized that the elements of the present compounds are very cheap economically and completely harmless to humans.\",\"PeriodicalId\":285677,\"journal\":{\"name\":\"Teion Kogaku (journal of The Cryogenic Society of Japan)\",\"volume\":\"278 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-07-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Teion Kogaku (journal of The Cryogenic Society of Japan)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2221/JCSJ.39.314\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Teion Kogaku (journal of The Cryogenic Society of Japan)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2221/JCSJ.39.314","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Development of High-performance Magnetic Refrigerants and Recent Trend in Room-temperature Magnetic Cooling
The development of new high-performance refrigerants has been highly desired from the viewpoints of energy efficiency and environmental safety. Recently, we developed promising magnetic refrigerant compounds La(Fe1-xSix)13 (0.86≤x≤0.90), that show the first-order of itinerant-electron metamagnetic transition from the paramagnetic state to the ferromagnetic state in applied magnetic fields. By adjusting the hydrogen concentration in La(Fe1-xSix)13Hy, the Curie temperature TC and the working temperature for cooling are controlled covering room temperature. Furthermore, the thermal conductivity of the present compounds is excellent. It should also be emphasized that the elements of the present compounds are very cheap economically and completely harmless to humans.
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