CHARACTER RESEARCH OF NANOMETER CaCO3 BY HIGH RESOLVING CAPABILITY SCANNING TUNNELING MICROSCOPE

In this paper, the STS of nanometer CaCO3 is obtained by STM.IPC-205B. The result shows that detection of some insulated nanophase materials by STM.IPC-205B, which we developed ourselves, of nanometer CaCO3 by STM presents conductibility well if they are thin enough and located in a proper bias voltage field. In this way, the forbidden band breadth (0.4eV) of nanometer CaCO3 can being known from the STS of nanometer CaCO3. And we find that the forbidden band breadth of nanometer CaCO3 is lower than that of semiconductor Si(1.1eV).