Journal article

HYDROGEN CATALYZED CRYSTALLIZATION OF STRONTIUM-TITANATE

TW SIMPSON, IV MITCHELL, JC MCCALLUM, LA BOATNER

JOURNAL OF APPLIED PHYSICS | AMER INST PHYSICS | Published : 1994

Abstract

The crystallization rate of amorphous strontium titanate is enhanced by more than an order of magnitude during thermal annealing in water vapor as compared to a dry ambient. Time resolved optical reflectivity (TRR) has been combined with Rutherford backscattering spectrometry (RBS) and ion channelling to investigate this effect. Thin amorphous films (0.6 μm) were produced on single-crystal substrates of (100) strontium titanate by bombardment with 1.9 or 2.0 MeV Pb ions. Specimens were annealed under controlled ambient conditions (H2O, D2O, vacuum, 265-430°C) and the solid phase epitaxial crystallization monitored in situ by TRR (633 nm). The TRR data were calibrated ex situ by transmission ..

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