论文标题
极度小的瞬间巡回流磁性单晶la $ _ {5} $ co $ _ {2} $ ge $ _ {3} $
Exceedingly Small Moment Itinerant Ferromagnetism of Single Crystalline La$_{5}$Co$_{2}$Ge$_{3}$
论文作者
论文摘要
单斜la $ _ {5} $ co $ _ {2} $ ge $ _ {3} $的单晶晶体是使用自发升华生长的，其特征是室内温度粉末X射线X射线衍射，各向异性温度和场依赖性磁化，温度依赖性电阻，特定的热量，特定的热量，特定的热和MUON旋转。 la $ _ {5} $ co $ _ {2} $ ge $ _ {3} $具有3.8〜K的curie温度（$ t_ \ mathrm {c} $），并且在磁力化中的铁磁性明确签名和$μsr$ $μsr$的清晰签名，并且在电阻率上有明显的旋转型散射，并且具有明显的旋转率，并且具有特定于散射性的散射和一个特异性的数据。与la $ _ {5} $ co $ _ {2} $ ge $ _ {3} $相关的磁性是巡回的，熵的变化为$ t_ \ togrm {c} $ $ \ simeq $ 0.05 rn2 rn2的$ \ simeq $ 0.05 r ln2 os mol-co/mol-co a co a $ b $ b $ sim a sim a sim a mage sim a mage sim rm \ sim rm sim sim sim rm sim sim rm sim sim rm f。巡回，小矩，低$ t_ \ mathrm c $化合物。
Single crystals of monoclinic La$_{5}$Co$_{2}$Ge$_{3}$ were grown using a self-flux method and were characterized by room-temperature powder X-ray diffraction, anisotropic temperature and field dependent magnetization, temperature dependent resistivity, specific heat, and muon spin rotation. La$_{5}$Co$_{2}$Ge$_{3}$ has a Curie temperature ($T_\mathrm{C}$) of 3.8~K and clear signatures of ferromagnetism in magnetization and $μSR$ data, as well as a clear loss of spin disorder scattering in resistivity data and a sharp specific heat anomaly. The magnetism associated with La$_{5}$Co$_{2}$Ge$_{3}$ is itinerant, has a change in the entropy at $T_\mathrm {C}$ of $\simeq$0.05 R ln2 per mol-Co, and has a low-field saturated moment of $\sim 0.1 μ_\mathrm B$/Co, making it a rare, itinerant, small moment, low $T_\mathrm C$ compound.
