论文标题
三碘钛的分层自旋1/2多晶型物
A Layered Spin 1/2 polymorph of titanium triiodide
论文作者
论文摘要
描述了先前未报告的分层自旋1/2三角形晶格多晶型物，描述了在900°C的6 GPA下合成的，但在大气压下稳定。这种空气敏感的材料具有CDI2型分层结构（P-3M1（＃164），A = 4.012 A和C = 6.641 A，在120 K，Ti0.667i2的120 K，Z = 1具有平面三角形的晶格，与TIII4（TII0.5II2）相关。尽管TII3公式与对自旋1/2 Ti（III）的层状蜂窝晶格的期望一致，但晶体结构似乎有无序。磁化率和热容量测量表明，材料经历了几个低温相变。
A previously unreported layered spin 1/2 triangular lattice polymorph of TiI3 is described, synthesized under 6 GPa of applied pressure at 900 C, but stable at atmospheric pressure. This air-sensitive material has a CdI2-type layered structure (P-3m1 (#164), a = 4.012 A and c = 6.641 A at 120 K, Z = 1 of Ti0.667I2) with an in-plane triangular lattice, related to that of TiI4 (Ti0.5I2). Although the TiI3 formula is consistent with expectations for a layered honeycomb lattice of spin 1/2 Ti(III), there appears to be disorder in the crystal structure. Magnetic susceptibility and heat capacity measurements suggest that the material undergoes several low temperature phase transitions.
