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Incipient ferroelectricity of AgTaO3 and ferroelectric nature of (Li0.008Ag0.992)TaO3
Khan Hidayat Ullah,Ullah Amir,Sualiheen Karishma,Ahmad Imtiaz,Ullah Mateen 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.79 No.9
AgTaO3 (AT) and ( Li0.008Ag0.992)TaO3 (LAT-0.8) compositions have been fabricated successfully via solid-state reaction (SSR) route. Phase purity of both the calcined powder and crushed sintered pellet was confirmed with XRD peaks which were indexed according to the rhombohedral structure with R3c∕R3c. The smooth hysteretic behavior of the LAT-0.8 system evidenced unlocking of the hidden ferroelectricity of AT. This phenomenon confirmed the incipient ferroelectric/quantum paraelectric nature of AT. So far, the triggering of ferroelectricity with 0.8% Li modification in AT has not been reported in the literature. A fair ferroelectric response of AT and LAT-0.8 at − 20 °C was obtained.