Effect of zero-point energy on the dielectric behavior of strontium titanate

✍ Scribed by M. Yuan; C.L. Wang; Y.X. Wang; R. Ali; J.L. Zhang

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 79 KB
• Volume: 127
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/s0038-1098(03)00460-5

✦ Synopsis

Barrett formula has been obtained in the framework of the effective field approach by including the zero-point energy. By fitting with experimental data of dielectric constant of SrTiO 3 , we find that they agree in the whole temperature range fairly well if the zero-point energy is assumed to change from a small value at low temperature to a large value at high temperature.