Change of Electrical Resistivity of PdH film as a Function of Film Thickness

수소흡수시 Pd 박막 시료의 두께 변화에 따른 전기저항의 변화

  • Cho, Young-sin (Division of Science Education, Kangwon National University)
  • 조영신 (강원대학교 사범대학교 과학교육학부)
  • Published : 1999.09.15


Pd films($180{\sim}670{\AA}$ thick) were made by thermal evaporation. Electrical resistance of the films was measured during hydrogen absorption-desorption process at room temperature. Resistance changes as a function of hydrogen pressure in thin films of the PdH system show a strong dependence on film thickness. $({\Delta}R_{\infty}/R_0)_{{\beta}min}$ for a $\670{\AA}$ film is 0.61. For a $\180{\AA}$ film, this is 0.34. Resistance change also depends on sample preparation condition.