비납계 (Bi 0.5 Na 0.5 )TiO 3 -BaTiO 3 강유전 세라믹 재료의 유전 및 압전 특성

국민호; 김명호; 조정아; 성연수; 송태권; 배동식; 정순종; 송재성; Min-Ho Kuk; Myong-Ho Kim; Jung-A Cho; Yeon-Soo Sung; Tae Kwon Song; Dong-Sik Bae; Soon-Jong Jeong; Jae-Sung Song

Korean Journal of Materials Research, Vol.15, No.11, 683-689, November, 2005

DOI10.3740/MRSK.2005.15.11.683 Export Citation

비납계 (Bi 0.5 Na 0.5 )TiO 3 -BaTiO 3 강유전 세라믹 재료의 유전 및 압전 특성

Dielectric and Piezoelectric Properties Of Lead-free (Bi 0.5 Na 0.5 )TiO 3 -BaTiO 3 Ferroelectric Ceramics

국민호, 김명호^†, 조정아, 성연수, 송태권, 배동식, 정순종¹, 송재성¹

창원대학교 나노 신소재 공학부
¹한국전기연구원 전자기소자그룹

Min-Ho Kuk, Myong-Ho Kim^†, Jung-A Cho, Yeon-Soo Sung, Tae Kwon Song, Dong-Sik Bae, Soon-Jong Jeong¹, and Jae-Sung Song¹

School of Nano and Advanced Materials Engineering, Changwon National University, Korea
¹Electric and Magnetic Devices Research Group, Korea Electrotechnology Research Institute, Korea

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The structural, piezoelectric and ferroelectric properties of (1?x)(Bi 0.5 Na 0.5 )TiO 3 x=0.00, 0.02, 0.04, 0.06, 0.08, and 0.10) ceramics were investigated. A gradual change in the crystal and microstructures with tile increase of BaTiO 3 (BT) concentration was observed. The (Bi 0.5 Na 0.5 )TiO 3 (BNT) samples show unusual properties as ferroelectric relaxer materials. We observed a phase transition in BNT solid solutions with BT having normal ferroelectric phase transition. At room temperature, BNT presents a single phase without the morphotropic phase boundary (MPB). In the case of samples doped with 4\~8mol% BT, rhombohedral-tetragonal MPB was formed and the piezoelectric properties were improved.

Keywords:bismuth sodium titanate;phase transition;morphotropic phase boundary;BNT-BT solid solution

[References]

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Takenaka T, Maruyama K, Sakata K, Jpn. J. Appl. Phys., 30(9B), 2236 (1991)
Ichinose N, Udagawa K, Ferroelectrics, 169, 317 (1995)
Takenaka T, Okuda T, Takegahara K, Ferroelectrics, 196, 175 (1997)
Herabut A, Safari A, J. Am. Ceram. Soc., 80(11), 2954 (1997)
Takenaka T, Ferroelectrics, 230, 87 (1999)
Nagata H, Takenaka T, J. Eur. Ceram. Soc., 21, 1299 (2001)
Chu BJ, Chen DR, Li GR, Yin QR, J. Eur. Cerarn. Soc., 22, 2115 (2002)
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Pronin IP, Syrnikov PP, Zaitseva VA, Ferroelectrics, 25, 395 (1980)
Isupov VA, Pronin IP, Kruzina TV, Ferroelectrics Letters, 2, 205 (1984)

[Referenced By]

[1] Smolenskii GA, Isupov VA, Agranovskaya AI, Kranik NN, Sov. Phys. Solid State, 2(11), 2651 (1961)

[2] Takenaka T, Maruyama K, Sakata K, Jpn. J. Appl. Phys., 30(9B), 2236 (1991)

[3] Ichinose N, Udagawa K, Ferroelectrics, 169, 317 (1995)

[4] Takenaka T, Okuda T, Takegahara K, Ferroelectrics, 196, 175 (1997)

[5] Herabut A, Safari A, J. Am. Ceram. Soc., 80(11), 2954 (1997)

[6] Takenaka T, Ferroelectrics, 230, 87 (1999)

[7] Nagata H, Takenaka T, J. Eur. Ceram. Soc., 21, 1299 (2001)

[8] Chu BJ, Chen DR, Li GR, Yin QR, J. Eur. Cerarn. Soc., 22, 2115 (2002)

[9] Wu YG, Zhang HL, Zhang Y, Ma JY, Xie DH, J. Mater. Sci., 38(5), 987 (2003)

[10] Pronin IP, Syrnikov PP, Zaitseva VA, Ferroelectrics, 25, 395 (1980)

[11] Isupov VA, Pronin IP, Kruzina TV, Ferroelectrics Letters, 2, 205 (1984)