Multimode quantitative scanning microwave microscopy of in situ grown epitaxial Ba 1-x Sr x TiO 3 composition spreads

作者: K. S. Chang , M. Aronova , O. Famodu , I. Takeuchi , S. E. Lofland

DOI: 10.1063/1.1427438

关键词: DielectricMaterials scienceAnalytical chemistryMicroscopyScanning probe microscopyMicrowaveEpitaxyMulti-mode optical fiberRelaxation (NMR)Microscope

摘要: We have performed variable-temperature multimode quantitative microwave microscopy of in situ epitaxial Ba1−xSrxTiO3 thin-film composition spreads fabricated on (100) LaA1O3 substrates. Dielectric properties were mapped as a function continuously varying from BaTiO3 to SrTiO3. demonstrated nondestructive temperature-dependent dielectric characterization local regions. Measurements are simultaneously taken at multiple resonant frequencies the microscope cavity. The measurements allow frequency dispersion studies. observe strong composition-dependent relaxation frequencies.

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