Preparation of Lead Chromate Crystalline Thin Films by RF-Magnetron Sputtering Method

摘要

Crystalline thin films of lead chromates, Pb_(1+ chi)CrO_(4+chi)(0 < =x< = 1) could be prepared by RF-magnetron sputtering using a PbCrO_4 target under the atmosphere of 3Pa Argon and 1 Pa oxygen. The chromates formed were composed of PbCrO_4 and Pb_2CrO_5, and the relative compositions of the two phases changed rather sensitively with a change in RF power and substrate temperature. A single phase of PbCrO_4 (chi=0) was formed when both the power and the temperature were low, (eg; 100 W and 300 deg C), while that of Pb_2CrO_5 (chi=1) was under the opposite conditions (eg; 200 W and 550 deg C), with the mixture being obtained under the intermediate conditions.