Combinatorial study of magnetic metallic alloys Example: ferromagnetic shape memory alloys Ferromagnetic SMA Takeuchi group, UMD funded by ONR Magnetization mapping Using scanning SQUID 100 - 150 emu /cc 50 70 30 40 10 20 15 25 35 45 60 2.50e+007 1 2 3 4 5 6 7 8 9 10 Ga Ni Mn - 50 100 150 200 Austenite start temp ( C) 250 M ( emu /cc) Screening for shape memory alloys using micromachined cantilever libraries

Combinatorial pulsed laser deposition of metal oxide thin films Takeuchi group, UMD Discrete combinatorial library Combinatorial PLD Flange X,Y- shutters/ masks 1” Heater plate Drive chain Each sensor element is made of a different metal oxide. Different aperture patterns and masks are used to fabricate combinatorial libraries and spreads of different designs. This library is an example of an Electronic Nose. . MgZnO composition spread Composition Spread of (Ba,Sr)TiO3 Dielectric constant vs composition measured by microwave microscopy Continuous phase evolution is observed. Continuous bandgap tuning is accomplished. 200 400 600 800 1000 0.0 0.2 0.4 0.6 0.8 1.0 Dielectric constant 0.95 GHz 2.85 GHz 4.95 GHz 0.1 0.3 0.5 Loss tangent funded by ONR and NSF Pure ZnO Mg (mol%) 40 80 30 35 MgO 40 2 q (degree) 45 50 BaTiO 3 x in Ba x Sr 1 - TiO SrTiO Scanning x-ray microdiffraction of MgZnO spread