| Author(s): |
Winnie K. Wong-Ng; Mark D. Vaudin; Shufang Wang; L Venimadhav; Shengming Guo; Ke Chen; Qi Li; A Soukiassian; D.G. Schlom; X.Q. Pan; D.G. Cahill; X. X. Xi; |
| Title: |
Structural and thermoelectric properties of Bi2Sr2Co2Oy thin films on LaAlO3 (100) and fused silica substrates |
| Published: |
January 12, 2009 |
| Abstract: |
We have grown Bi2Sr2Co2Oy thin films on LaAlO3 (100) and fused silica substrates by pulsed laser deposition. The films on LaAlO3 are c-axis oriented and partially in-plane aligned with multiple domains while the films on fused silica are preferred c-axis oriented without in-plane alignment. The Seebeck coefficient and resistivity of films on both substrates are comparable to those of single crystals. A large nonlinear resistivity related to the suppression of the spin density wave by external electric field was also observed. An oxide p-n heterojunction was formed by depositing Bi2Sr2Co2Oy film on Nb-doped SrTiO3 single crystal, which showed a rectifying behavior. These thin films and heterostructures may be used for novel thermoelectric applications. |
| Citation: |
Applied Physics Letters |
| Volume: |
94 |
| Issue: |
2 |
| Keywords: |
Bi2Sr2Co2Oy films on LaAlO3 (100); texture, thermoelectric properties, PLD, oxide p-n junction |
| Research Areas: |
Energy Conversion, Storage, and Transport, Energy |
