High-temperature dielectric properties of TbFeO3 ceramics. Issue 1 (January 2016)

• Record Type: Journal Article
• Authors: Zhang, Da; Li, Qiuju; Wang, Chunchang; Zhang, Nan; Li, Haibo
• Is Part Of: Ceramics international. Volume 42:Issue 1:Part A(2016)
• Page Start: 657
• Page End: 660
• Publication Date: 2016-01
• Subjects: Ceramics -- Dielectric anomaly -- Maxwell–Wagner relaxation -- Negative capacitance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.08.161
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: TbFeO3 ceramics were prepared via conventional solid-state reaction route. By means of the complex dielectric permittivity, electric modulus, and impedance analysis, the high-temperature dielectric properties of TbFeO3 were investigated in the temperature range from 300 to 1073 K and frequency range of 10 2 –10 7 Hz. Rich dielectric phenomena, including three dielectric responses (R1–R3), a relaxor-like dielectric anomaly and negative capacitance were found in the order of ascending temperature. The low-temperature relaxation (R1) near room temperature is caused by the surface-layer effect. The high-temperature relaxations R2 and R3 were argued to be related to the dipolar and Maxwell–Wagner relaxation, The anomaly is confirmed to be caused by the negative capacitance effect.