Ferroelectric NaNbO3 ceramics fabricated by spark plasma sintering

被引：0

作者：

Wada, Takahiro ^{[1
]}

Tsuji, Kenji ^{[1
]}

Saito, Takehisa ^{[1
]}

Matsuo, Yoshihiro ^{[1
]}

机构：

[1] Department of Materials Chemistry, Ryukoku University, Seta

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 2003年 / 42卷 / 9 B期

关键词：

Antiferroelectric; Ceramics; Ferroelectric; Lead free; Piezoelectric; Sodium niobate; Spark plasma sintering;

D O I：

10.1143/jjap.42.6110

中图分类号：

学科分类号：

摘要：

High-density ceramic samples of NaNbO3 (NN) have been successfully fabricated by spark plasma sintering (SPS), which is a process that uses microscopic electrical discharge between particles under pressure. The obtained NN ceramic shows a hysteresis loop characteristic of ferroelectrics. The coercive electric field, Ec, and remanent polarization, Pr, are determined to be 12 kV/cm and 0.42 μC/cm2, respectively, for an unpoled sample and 16 kV/cm and 27 μC/cm2, respectively, for a poled sample. The NN ceramic also shows piezoelectricity with a planar electromechanical coupling factor, Kp, of about 20%. The ferroelectricity and piezoelectricity in the NN ceramic are stable at high temperatures. The piezoelectric characteristic does not change after annealing at 300°C but it disappears after annealing at 350°C.

引用

页码：6110 / 6114

页数：4

共 10 条

[1]

Takenaka T., Maruyama K., Sakata K., Jpn. J. Appl. Phys., 30, (1991)

[2]

Wada T., Fukui A., Matsuo Y., Jpn. J. Appl. Phys., 41, (2002)

[3]

Wada T., Toyoike K., Imanaka Y., Matsuo Y., Jpn. J. Appl. Phys., 40, (2001)

[4]

Megaw H.D., Ferroelectrics, 7, (1974)

[5]

Cross L.E., Nicholson B.I., Philos. Mag., 46, (1955)

[6]

Dungan R.H., Golding R.D., J. Am. Ceram. Soc., 47, (1964)

[7]

Molak A., Onodera A., Yamashita H., Jpn. J. Appl. Phys., 31, (1992)

[8]

Takeuchi T., Tabuchi M., Kageyama H., J. Am. Ceram. Soc., 82, (1999)

[9]

Wang R., Xie R., Sekiya T., Shimojo Y., Akimune Y., Hirosaki N., Itoh M., Jpn. J. Appl. Phys., 41, (2002)

[10]

Reznitchenko L.A., Trik A.V., Kuznetsova E.M., Sakhnenko V.P., J. Phys.: Condens. Matter, 13, (2001)

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