论文标题
钙钛矿BA2CAMOO6中的低温结构相变
Low Temperature Structural Phase Transition in the Perovskite Ba2CaMoO6
论文作者
论文摘要
BA2CAMOO6是通过固态方法合成的。晶体结构在室温下采用立方FM-3M空间群，晶格参数为8.378231（5）{Angstroms}。冷却后，确定BA2CAMOO6将结构相过渡到四方I4/m（a = 5.905763（6）{Angstroms} {angstroms}，C = 8.38817（1）{1）{1）{Angstroms}）左右。 测量。这种结构相过渡将加深我们对钙钛矿家族的理解，尤其是破坏角落共享网络的钙钛矿的形成。
Ba2CaMoO6 was synthesized by solid state method. The crystal structure adopts cubic Fm-3m space group at room temperature with lattice parameters of 8.378231(5) {angstroms}. Upon cooling, Ba2CaMoO6 was determined to have a structural phase transition to tetragonal I4/m (a=5.905763(6) {angstroms} and c=8.38817(1) {angstroms}) around 200 K. The phase transition was probed structurally by synchrotron and neutron diffraction and thermodynamically by specific heat and differential scanning calorimetry measurement. This structural phase transition will deepens our understanding of the perovskite family especially the formation of perovskites that break corner sharing networks.
