Reported in this paper are the use of Changping eurite in crystalline glaze body.On the basis of SEM,XRD and chemical composition analysis,Changping eurite is an ultra hypabyssal acidite.Main chemical compositions of ...Reported in this paper are the use of Changping eurite in crystalline glaze body.On the basis of SEM,XRD and chemical composition analysis,Changping eurite is an ultra hypabyssal acidite.Main chemical compositions of Changping eruite are SiO 2 75%,K 2O+Na 2O>8%and Al 2O 3 13 5%.There are quartz, feldspar,albite,opaque minerals and pyroxene biotite in it.The composition is familiar to some china stone.The body which contains 40%～65% Changping eurite has the character of feldspathic porcelain.In firing temperature 1250～1300℃,the body is nicely combined with some crystalline glaze.展开更多
We have developed a nev self-assembled quantum dot system where InGaAs dots are formed on an InAlAs wetting layer and embedded in the GaAs matrix. The structure is realized by special sample designation and demonstrat...We have developed a nev self-assembled quantum dot system where InGaAs dots are formed on an InAlAs wetting layer and embedded in the GaAs matrix. The structure is realized by special sample designation and demonstrated by low-temperature photoluminescence measurements. In contrast to the traditional InAs/GaAs quantum dots dominated by the ensemble effect, the temperature dependence of the photoluminescence of such a quantum dot structure behaves as decoupled quantum dots. This can be attributed to the enhanced potential confinement for the dots provided by a higher-energy barrier in the wetting layer。展开更多
文摘Reported in this paper are the use of Changping eurite in crystalline glaze body.On the basis of SEM,XRD and chemical composition analysis,Changping eurite is an ultra hypabyssal acidite.Main chemical compositions of Changping eruite are SiO 2 75%,K 2O+Na 2O>8%and Al 2O 3 13 5%.There are quartz, feldspar,albite,opaque minerals and pyroxene biotite in it.The composition is familiar to some china stone.The body which contains 40%～65% Changping eurite has the character of feldspathic porcelain.In firing temperature 1250～1300℃,the body is nicely combined with some crystalline glaze.
基金Supported by the National Natural Science Foundation of China under Grant No.69736010the National Advanced Materials Committee of China。
文摘We have developed a nev self-assembled quantum dot system where InGaAs dots are formed on an InAlAs wetting layer and embedded in the GaAs matrix. The structure is realized by special sample designation and demonstrated by low-temperature photoluminescence measurements. In contrast to the traditional InAs/GaAs quantum dots dominated by the ensemble effect, the temperature dependence of the photoluminescence of such a quantum dot structure behaves as decoupled quantum dots. This can be attributed to the enhanced potential confinement for the dots provided by a higher-energy barrier in the wetting layer。
