BSU bulletin. Chemistry. Physics
Bibliographic description:
, , , , THERMODYNAMIC MODELING OF LEAD PbMoO4 MOLYBDATE SYNTHESIS, OPTIMIZATION OF FORMATION CONDITIONS OF THIN FILMS AT SPUTTERING BY ION BEAMS, PHASE COMPOSITION AND STRUCTURE // BSU bulletin. Chemistry. Physics. - 2017. №2-3. . - С. 49-59.
Title:
THERMODYNAMIC MODELING OF LEAD PbMoO4 MOLYBDATE SYNTHESIS, OPTIMIZATION OF FORMATION CONDITIONS OF THIN FILMS AT SPUTTERING BY ION BEAMS, PHASE COMPOSITION AND STRUCTURE
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Regularities of lead molybdate thin films synthesis were considered, being obtained by ion beam sputtering. The process of PbMoO4 thin films synthesis by sputtering with two ion beams is considered. This technique allows for independent targets sputtering of two reactive components (lead oxide PbO and molybdenum trioxide MoO3) with formation of gaseous streams of particles that come to the surface of the substrate, where the synthesis of lead molybdate is carried out. Simulated are phase balances in system Pb-Mo-O2 at pressure 10-3 Pa. Fields of crystallizati on of co-existing phases are revealed. Grown PbMoO4 thin films were oriented, polycrystalline and had scheelite structure. The model of PbMoO4 layers formation on the surface of offused silica SiO2 is discussed. The analysis of growth processes is provided. X-ray analysis of samples was conducted. Research has shown that the formation of the PbMoO4 thin films is a complex physical-chemical process.
Keywords:
ions beam, sputtering, thermodynamical modeling, ternary phase diagram Pb-Mo-O2, films formation, lead molybdate.
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