论文标题
polycrystalline散装SR $ _3 $ oso $ _6 $ double-perovskite绝缘子的研究：与1000 k铁磁上皮膜进行比较
Study of polycrystalline bulk Sr$_3$OsO$_6$ double-perovskite insulator: comparison with 1000 K ferromagnetic epitaxial films
论文作者
论文摘要
PolyCrystalline SR $ _3 $ OSO $ _6 $，是订购的双重植物绝缘子，在高温和高压条件下通过固态反应合成1200 $^\ circe $ c和6 GPA。该合成使我们能够对SR $ _3 $ _3 $ oso $ _6 $的大量形式进行比较研究，以揭示1000 K铁磁性的驾驶机制，最近发现了该驱动器机制，该机构是针对外在生长的SR $ $ _3 $ _3 $ oso $ _6 $ _6 $电影的。与电影不同，批量是由反铁磁性而不是铁磁性主导的。因此，仅当Sr $ _3 $ oso $ _6 $在接口的影响下时，才出现强大的铁磁顺序。在低温下找到39.6（9）10 $^{ - 3} $ j mol $^{ - 1} $ j mol $^{ - 1} $的特定热容量在低温下（$ <$ 17 K）。该值非常高，表明在磁接地状态下可能存在可能的费米样激发。尽管SR $ _3 $ OSO $ _6 $的散装和胶片形式共享相同的晶格基础和电绝缘状态，但它们之间的磁性完全不同。
Polycrystalline Sr$_3$OsO$_6$, which is an ordered double-perovskite insulator, is synthesized via solid-state reaction under high-temperature and high-pressure conditions of 1200 $^\circ$C and 6 GPa. The synthesis enables us to conduct a comparative study of the bulk form of Sr$_3$OsO$_6$ toward revealing the driving mechanism of 1000 K ferromagnetism, which has recently been discovered for epitaxially grown Sr$_3$OsO$_6$ films. Unlike the film, the bulk is dominated by antiferromagnetism rather than ferromagnetism. Therefore, robust ferromagnetic order appears only when Sr$_3$OsO$_6$ is under the influence of interfaces. A specific heat capacity of 39.6(9) 10$^{-3}$ J mol$^{-1}$ K$^{-2}$ is found at low temperatures ($<$17 K). This value is remarkably high, suggesting the presence of possible fermionic-like excitations at the magnetic ground state. Although the bulk and film forms of Sr$_3$OsO$_6$ share the same lattice basis and electrically insulating state, the magnetism is entirely different between them.
