Abstract: A process for producing a ferroelectric lead zirconate titanate dielectric for a semiconductor device by applying a lead titanate seeding layer to a substrate before applying the lead zirconate titanate film, and a semiconductor device produced in accordance with the process. The lead titanate seeding layer allows the subsequent lead zirconate titanate to be annealed at a significantly lower seeding temperature, to lessen interdiffusion among the films, electrodes and substrate and to lessen thermal stresses.

Abstract: A method for orally administering vitamin preparations is described which combine vitamin B.sub.12 (B.sub.12, cobalamin) and folic acid (folate), with and without pyridoxine (B.sub.6), for preventing and treating elevated serum homocysteine (HC), cystathionine (CT), methylmalonic acid (MMA), or 2-methylcitric acid (2-MCA) levels. These metabolites have been shown to be indicative of B.sub.12 and/or folic acid deficiencies. Further, it is likely that a B.sub.6 deficiency may be present with a B.sub.12 or folate deficiency. The method of the invention is also for use in lowering serum HC, CT, MMA, or 2-MCA in patients with or at risk for neuropsychiatric, vascular, renal or hematologic diseases. One embodiment of the invention is the use of a non-prescription formulation containing 2.0 mg B.sub.12 and 0.4 mg folic acid, with and without 25 mg B.sub.6. Another embodiment uses a prescription strength formulation containing 2.0 mg B.sub.12 and 1.0 mg folic acid, with and without 25 mg B.sub.6.