期刊
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
卷 61, 期 6, 页码 951-955出版社
KOREAN PHYSICAL SOC
DOI: 10.3938/jkps.61.951
关键词
Lead-free; Dielectric properties; Bi0.5Na0.5TiO3 (BNT); Conductivity
资金
- National Research Foundation of Korea (NRF)
- Korean Government [2011-0026804]
- Ministry of Education, Science and Technology (MEST) [2011-0030805]
- National Research Foundation of Korea [2011-0030805] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
LiNbO3-modified (1 - x)Bi0.5Na0.5TiO3:xLiNbO(3) (BNT:LN, x = 0, 0.01, 0.03, 0.05, 0.07, and 0.10) ceramics were synthesized by using a solid state reaction method. The crystal structure and the electrical properties were examined through X-ray diffraction, dielectric, and electrical conductivity measurements. Addition of LiNbO3 into Bi0.5Na0.5TiO3 broadened the maximum dielectric peaks and decreased the depolarization temperature (T (d) ). With x a parts per thousand yen 0.05, the dielectric anomalies depended more on the frequency and showed a relaxor-like behavior. LiNbO3 incorporation in Bi0.5Na0.5TiO3 affected the degree of crystallographic disorder and caused a transformation to a relaxor ferroelectric. The temperature dependences of the ac conductivity decreased with increasing LiNbO3 concentration.
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