Ba0.6Sr0.4TiO3 thin films doped with K were deposited on Pt/Ti/SiO2/Si substrates by the chemical solution deposition method. The structure, surface morphology and the dielectric and tunable properties of Bao.6Sro.4Ti...Ba0.6Sr0.4TiO3 thin films doped with K were deposited on Pt/Ti/SiO2/Si substrates by the chemical solution deposition method. The structure, surface morphology and the dielectric and tunable properties of Bao.6Sro.4TiO3 thin films have been studied in detail. The K content in Ba0.6Sro.4TiO3 thin films has a strong influence on the material＇s properties including surface morphology and the dielectric and tunable properties. It was found that the Curie temperature of K-doped Bao.6Sr0.4TiO3 films shifts to a higher value compared with that of undoped Ba0.6Sr0.4TiO3 thin films, which leads to a dielectric enhancement of K-doped Ba0.6Sr0.4TiO3 films at room temperature. At the optimized content of 0.02 mol, the dielectric loss tangent is reduced significantly from 0.057 to 0.020. Meanwhile, the tunability is enhanced obviously from 26% to 48% at the measured frequency of 1 MHz and the maximum value of the figure of merit is 23.8. This suggests that such films have potential applications for tunable devices.展开更多
The aim of this paper is to investigate how the corporate characteristics and contextual factors influence the choice of managers in initiating the sustainability report/reporting （SR） and to understand the role of ...The aim of this paper is to investigate how the corporate characteristics and contextual factors influence the choice of managers in initiating the sustainability report/reporting （SR） and to understand the role of organisational dynamics. The research design develops through a deductive and inductive approach. The deductive approach is based on an analysis of the Social and Environmental Accounting Research （SEAR） strands which use the theoretical framework of （neo-） institutional theory to inquire the adoption and diffusion of SR. The inductive method is based on a research case that focuses on the SGR Group. ＂How can the rico-institutional theory help explain the process of SGR＇s SR implementation in Italian and Bulgarian companies＂？ The study identifies both the internal and contextual factors associated with the SR development and the regulative, normative, and cognitive dimensions/factors that affect the implementation and institutionalisation of SR in Italy and Bulgaria, in accordance with the different institutional environments in which the social and sustainability accounting projects are developed.展开更多
基金Project supported by the National Natural Science Foundation of China （Grant Nos. 10874051 and 50802096） and the Innovation Project for Young Talents of Hefei Institutes of Physical Science, Chinese Academy of Sciences （Grant No. O84N391123）.
文摘Ba0.6Sr0.4TiO3 thin films doped with K were deposited on Pt/Ti/SiO2/Si substrates by the chemical solution deposition method. The structure, surface morphology and the dielectric and tunable properties of Bao.6Sro.4TiO3 thin films have been studied in detail. The K content in Ba0.6Sro.4TiO3 thin films has a strong influence on the material＇s properties including surface morphology and the dielectric and tunable properties. It was found that the Curie temperature of K-doped Bao.6Sr0.4TiO3 films shifts to a higher value compared with that of undoped Ba0.6Sr0.4TiO3 thin films, which leads to a dielectric enhancement of K-doped Ba0.6Sr0.4TiO3 films at room temperature. At the optimized content of 0.02 mol, the dielectric loss tangent is reduced significantly from 0.057 to 0.020. Meanwhile, the tunability is enhanced obviously from 26% to 48% at the measured frequency of 1 MHz and the maximum value of the figure of merit is 23.8. This suggests that such films have potential applications for tunable devices.
文摘The aim of this paper is to investigate how the corporate characteristics and contextual factors influence the choice of managers in initiating the sustainability report/reporting （SR） and to understand the role of organisational dynamics. The research design develops through a deductive and inductive approach. The deductive approach is based on an analysis of the Social and Environmental Accounting Research （SEAR） strands which use the theoretical framework of （neo-） institutional theory to inquire the adoption and diffusion of SR. The inductive method is based on a research case that focuses on the SGR Group. ＂How can the rico-institutional theory help explain the process of SGR＇s SR implementation in Italian and Bulgarian companies＂？ The study identifies both the internal and contextual factors associated with the SR development and the regulative, normative, and cognitive dimensions/factors that affect the implementation and institutionalisation of SR in Italy and Bulgaria, in accordance with the different institutional environments in which the social and sustainability accounting projects are developed.
