No abstract

Defect state D (0.8 eV) was experimentally detected in Ta2O5 capacitors with ultrathin (physical thickness <10 nm) Ta2O5 films using zero-bias thermally stimulated current spectroscopy and correlated with leakage current. Defect state D can be more efficiently suppressed by using N2O rapid thermal annealing (RTA) instead of using O2 RTA for postdeposition annealing and by using TiN instead of Al for top electrode. We believe that defect D is probably the first ionization level of the oxygen vacancy deep double donor. Other important defects are Si/O-vacancy complex single donors and C/O-vacancy complex single donors.

Local bonding environment of plasma deposited nitrogen-rich silicon nitride thin films

Hayzelden et al., "In Situ Transmission Electron Micros copy Studies of Silicide-Mediated Crystallization of Amor phous Silicon'(3 pages).

Objective To assess whether transcervical intrauterine instillation of local anaesthetic agent reduces Design F'rospective, randomised, double blind, placebo-controlled trial.Setting Outpatient hysteroscopy clinic in a university teaching hospital.Population Ninety women undergoing outpatient diagnostic hysteroscopy with or without endometrial biopsy.Methods Transcervical intrauterine instillation of 5 mL of 2% lignocaine into the uterine cavity before performing the procedure.Main outcome measures Evaluation of pain at different stages of the procedure using a visual analogue scale and changes in blood pressure and heart rate. ResultsThe use of local anaesthetic did not alleviate pain experienced during hysteroscopy and endometrial biopsy. It did not prevent the occurrence of vaso-vagal reactions; however the incidence of these was low.Conclusions Transcervical instillation of local anaesthesia neither reduced pain nor prevented vasovagal reaction during hysteroscopy and endometrial biopsy.pain during diagnostic outpatient hysteroscopy and endometrial biopsy.