The effect of the substrates on the structural and electrical properties of MgB 2 thin films deposited by HPCVD was discussed. Epitaxial MgB 2 layers were obtained on SiC, sapphire and on AIN epitaxial layers deposited by MOCVD on SiC substrates. MgB 2 films deposited on SiC substrates consistently had higher critical temperature than films deposited on sapphire. It was found that hydrostatic stress in a compression of the MgB 2 lattice to leads to decrease in Tc.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering