The dielectric properties and microstructures were investigated in ceramics of BaO·Nd2O3·5TiO2 to which various amounts of Mn were added. Although the behavior of the dielectric constant was independent of additional Mn, the temperature coefficient was improved considerably. The phases which were observed in these ceramics were characterized by means of electron probe microanalysis (EPMA) and X-ray diffraction method (XRD) in microareas. The shapes and areas of the phases varied with Mn content. The dielectric properties seemed to be mainly related to the properties of the matrix phase.

Dielectric SrTiO3 thin films have been prepared on Pt/SiO2/Si-wafer by means of a conventional rf-magnetron sputtering technique. Electric and dielectric properties of the films have been studied. It is demonstrated that the leakage current of the films is strongly dependent on the atmosphere during deposition. The SrTiO3 film 75 nm in thickness fabricated in pure O2 of 26.6 Pa at 600°C obtained the lowest leakage current density of 4.0×10-9 A/cm2 at 2 V. Analysis of the leakage current vs applied voltage characteristic indicated that the conduction in the higher electric field was due to the Pool-Frenkel emission.

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The gauge-links connecting the parton field operators in the hadronic matrix elements appearing in the transverse momentum dependent distribution functions give rise to T -odd effects. Due to the process-dependence of the gauge-links the T -odd distribution functions appear with different prefactors. A consequence is that in the description of single spin asymmetries the parton distribution and fragmentation functions are convoluted with gluonic pole cross sections rather than the basic partonic cross sections. In this paper we calculate the gluonic pole cross sections encountered in single spin asymmetries in hadronhadron scattering. The case of back-to-back pion production in polarized proton-proton scattering is worked out explicitly. It is shown how T -odd gluon distribution functions originating from gluonic pole matrix elements appear in twofold.