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picture1_Measurements Pdf 91214 | New Energy Band Gap By Four Probe Method 1


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File: Measurements Pdf 91214 | New Energy Band Gap By Four Probe Method 1
experiment no 5 object to determine the energy band gap of ge germanium crystal by four probe method apparatus 1 probe arrangement it has four individually loaded probes coated with ...

icon picture PDF Filetype PDF | Posted on 16 Sep 2022 | 4 years ago
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...Experiment no object to determine the energy band gap of ge germanium crystal by four probe method apparatus arrangement it has individually loaded probes coated with zn at tips are collinear and equally spaced individual spring ensures good electrical contacts sample mounted in a teflon bush which ensure insulation between spacer near is also provided keep equal distance whole on suitable stand leads for current voltage measurements form chip slice oven small variation temperature from room about c set up measuring unit three subunits all enclosed one cabinet multi range digital voltmeter b constant power supply theory points as depicted schematically fig contains thin made contact under test i am flow outer vis measured v two inner ideally without drawing any if semi infinite volume inter spacing s then can be shown that resistivity given o subscript preceding equation indicates value extent combination correction factors must multiplied right hand side this following procedure below...

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