A novel method to produce quantum dots on Si substrate using AAO template and UV pulsed laser deposition technique was proposed and tested.AAO template fabricated by two-step method was put in front of si single cryst...A novel method to produce quantum dots on Si substrate using AAO template and UV pulsed laser deposition technique was proposed and tested.AAO template fabricated by two-step method was put in front of si single crystal substrate.The luminescence target material La_(0.95)Eu_(0.05)BaB_(9)O_(16)was ablated by pulsed UV laser(248nm),and passed through the holes in AAO template,and was deposited on the substrate.Both Raman and luminescence spectra were measured to find the difference between the bulk target and the dots materials.展开更多
In this paper,we briefly report the property diference of La_(1-x)Sr_(x)MnO_(3)(x=0.1)ultra—thin films(^([001])orientation)at diferent thickness grown on SrTiO_(3)(100)substrate.It is found that the magnetic interact...In this paper,we briefly report the property diference of La_(1-x)Sr_(x)MnO_(3)(x=0.1)ultra—thin films(^([001])orientation)at diferent thickness grown on SrTiO_(3)(100)substrate.It is found that the magnetic interaction is greatly enhanced when film thickness is between 5nm-10nm.展开更多
Both tensile strain and compressive strain effects on the properties of La_(1-x)Sr_(x)MnO_(3)(x=0.1)films were investigated.The films on SrTiO_(3)(100)display’unusual’tensile strain⋯。which supports a ferro-magnetic...Both tensile strain and compressive strain effects on the properties of La_(1-x)Sr_(x)MnO_(3)(x=0.1)films were investigated.The films on SrTiO_(3)(100)display’unusual’tensile strain⋯。which supports a ferro-magnetic metallic behavior when film thickness is larger than lOnm.The films on NdGaO_(3)(100)presenting compressive strain,on the other hand,demonstrate strongly enhanced insulating behavior.展开更多
文摘A novel method to produce quantum dots on Si substrate using AAO template and UV pulsed laser deposition technique was proposed and tested.AAO template fabricated by two-step method was put in front of si single crystal substrate.The luminescence target material La_(0.95)Eu_(0.05)BaB_(9)O_(16)was ablated by pulsed UV laser(248nm),and passed through the holes in AAO template,and was deposited on the substrate.Both Raman and luminescence spectra were measured to find the difference between the bulk target and the dots materials.
基金This work is supported by National Natural Science Foundation of China under contract number of 10274026Yunnan Natural Science Fondation of China under contract number of 2003E0019M
文摘In this paper,we briefly report the property diference of La_(1-x)Sr_(x)MnO_(3)(x=0.1)ultra—thin films(^([001])orientation)at diferent thickness grown on SrTiO_(3)(100)substrate.It is found that the magnetic interaction is greatly enhanced when film thickness is between 5nm-10nm.
基金This work is supported by National Natural Science Foundation of China under contract number of 10274026Yunnan Natural Science Foundation of China under contract number of 2003E0019M
文摘Both tensile strain and compressive strain effects on the properties of La_(1-x)Sr_(x)MnO_(3)(x=0.1)films were investigated.The films on SrTiO_(3)(100)display’unusual’tensile strain⋯。which supports a ferro-magnetic metallic behavior when film thickness is larger than lOnm.The films on NdGaO_(3)(100)presenting compressive strain,on the other hand,demonstrate strongly enhanced insulating behavior.
