• 1
  • 2
  • 5
  • 6
  • 3
  • 4
IPM
30
YEARS OLD

“School of Physic”

Back to Papers Home
Back to Papers of School of Physic

Paper   IPM / Physic / 11520
School of Physics
  Title:   Metal-Nonmetal Transition in the Copper-Carbon Nanocomposite Films
  Author(s): 
1.  T. Ghodselahi
2.  M.E. Vesaghi
3.  A. Shafiekhani
4.  M. Ahmadi
5.  M. Panahandeh
6.  M. Heidarsani
  Status:   Published
  Journal: Physica B
  Vol.:  405
  Year:  2010
  Pages:   3949-3951
  Supported by:  IPM
  Abstract:
We preparedCunanoparticlesina-C:Hthinfilmsbyco-depositionofRF-sputteringandRF-PECVD methodsatroomtemperature.ByincreasingCucontentinthesefilmsanonmetal-metal(N-M) transitionisobserved.Thistransitionisexplainablebythepowerlawofpercolationtheory.Thecritical metalcontentisobtained56exponentfor2dimensionsystemsandsmallerthantheonefor3dimensionsystems.Theelectrical conductivityofdielectricsampleswasexplainedbytunneling.Activationtunnelingenergythatwas obtainedfromtemperaturedependenceofelectricalresistivitycorrelateswithnearinfraredabsorption peak ofsamplesandbothofthemdependonCucontentofthinfilms.IntheearlystageofN-M transition,byincreasingmetalcontent,apeculiareffectofmetallictononmetallicstateoccurs.

Download TeX format
back to top
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
scroll left or right