Pressure effects on grain boundary, electrical and vibrational properties of the polycrystalline BaTeO3Yan Li, Yonghao Han, Yanzhang Ma, Pinwen Zhu, Xin Wang and Chunxiao GaoEPL, 98 6 (2012) 66006DOI: https://doi.org/10.1209/0295-5075/98/66006