中文摘要：

采用脉冲激光沉积法分别在（100）LaAlO3和（100）SrTiO3基片上生长了La0.33Pr0.34Ca0.33MnO3薄膜,并通过磁测量和电输运测量对生长在不同基片上的La0.33Pr0.34Ca0.33MnO3薄膜的物性进行了研究.结果表明,基片和薄膜之间的压应力导致La0.33Pr0.34Ca0.33MnO3薄膜容易出现铁磁相,而电荷有序相则被抑制.基片和薄膜之间的张应力则导致La0.33Pr0.34Ca0.33MnO3薄膜容易出现电荷有序相,铁磁相被抑制.导致该现象的可能原因之一是应力使得晶格中Mn—O键角发生改变而引起双交换作用的改变.

英文摘要：

La0.33Pr0.34Ca0.33MnO3 thin films have been grown on（100） LaAlO3 and（100） SrTiO3 substrates by pulsed laser deposition,and the physical properties of those thin films have been studied through magnetic and electric transport measurements.The results show that compressive strain between the film and substrate favors the formation of the ferromagnetic metallic phase while suppressing the charge ordered insulating phase.On the contrary,tensile strain tends to enhance the ferromagnetic metallic phase while eliminating the charge ordered insulating phase.The reason could be that the strain induces change in the Mn-O bonding angle in the crystal lattice and thus modify the double exchange interaction.