M. J. Alam

5 Questions 1 Answers 0 Followers

Questions related from M. J. Alam

Why carrier Concentration decreases while increasing Temperature ?

Hi All . Recently, I conducted Hall measurement experiments at high temperatures on highly p-doped diamond with a doping concentration of 2.5×10^20 cm−3 During these experiments, I observed two...

24 June 2024 4,714 0 View

Why does Negative resistance value produce during Vander Pauw high temperature Resistivity measurement ?

Greeting to all I am doing Vander pauw resistivity measurement on highly doped P+ Silicon. The resistivity of the sample was 0.001-0.005 Ohm cm. The room temperature resistivity data i found is...

30 January 2023 4,683 0 View

Why do we get different hall coefficient for different current on that same sample ?

I did hall effect measuring on p-type silicon using vander pauw method. i did not see any changes in resistivity measurement for different current . I applied current 1mA, 2mA and 3 mA, but i did...

27 September 2022 4,310 0 View

Why does n type behavior of p type silicon happen at higher temperature ?

I am doing hall effect measurement in Vander pau method for higher temperature. from 25 degree Celsius to 210 degree Celsius hall coefficients are positive after 210 degree Celsius temperature...

13 August 2022 1,955 1 View

Why do i get negative voltage in hall effect measurement and resistivity measurement for Ptype silicon ?

i am taking measurement for higher temperature from 25 degree Celsius to 450. Here i am following the Vander Pau method. i see in some cases there is some unwanted voltages produce. like sometimes...

07 July 2022 8,509 6 View