Table of Contents
Materials, Volume 12, Issue 5 (March-1 2019)
- Issues are regarded as officially published after their release is announced to the table of contents alert mailing list.
- You may sign up for e-mail alerts to receive table of contents of newly released issues.
- PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.
Cover Story (view full-size image) A successful optimization of the thermoelectric properties of the Zintl phase, Yb14ZnSb11, is [...] Read more. A successful optimization of the thermoelectric properties of the Zintl phase, Yb14ZnSb11, is described as an almost electron precise Zintl phase with 13.24Yb2+ + 0.75Yb3+ + ZnSb49- + Sb37- + 4Sb3-. Replacement of Yb3+ with either Y3+, approximately the same size as Yb3+, or La3+, larger than Yb3+, is investigated. These two rare earths can be substitution in Yb14-xRExZnSb11 (RE = Y, La, x~0.5) and drastically improves the thermoelectric efficiency while also improving structural characteristics such as melting temperatures. The effective mass increases with temperature providing a significant increase in the Seebeck coefficient. Ideas for further increasing the efficiencies of the thermoelectric properties are provided. View this paper.