单词	samarium
释义	samarium noun sa·​mar·​i·​um sə-ˈmer-ē-əm  : a silvery-white lustrous metallic element of the rare-earth group that is used especially in permanent magnets see Chemical Elements Table Example Sentences Recent Examples on the Web Japanese scientist Masato Sagawa, for example—who just won the prestigious Queen Elizabeth Prize for Engineering—developed the NdFeB magnet in the 1980s to replace the costly cobalt in samarium-cobalt magnets. Mary Hui, Quartz, 7 Mar. 2022 Known as the samarium-cobalt (SmCo) magnet, it was developed in the 1960s in the US and was far more powerful than previous permanent magnets. Mary Hui, Quartz, 14 May 2021 The first rare earth magnet to have been developed was based on the rare earth samarium and the transition metal cobalt. Mary Hui, Quartz, 14 May 2021 To the researchers' shock, perfectly doubled conductance happened in their samarium hexaboride experiment. Rachel Crowell, Scientific American, 9 July 2019 Even the more prized magnetic elements such as neodymium, dysprosium, praseodymium and samarium are humdrum enough that Apple Inc. uses rare-earth magnets to make its power cables stick in place. Washington Post, 31 May 2019 The observation, in a substance called samarium hexaboride, is still not understood. Quanta Magazine, 9 June 2016 The observation, in a substance called samarium hexaboride, is still not understood. Maggie Mckee, WIRED, 24 June 2016 See More Word History Etymology New Latin, from French samarskite First Known Use 1879, in the meaning defined above Medical Definition samarium noun sa·​mar·​i·​um sə-ˈmer-ē-əm, -ˈmar-  : a pale gray lustrous metallic element used especially in alloys that form permanent magnets —symbol Sm see Chemical Elements Table
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