采用偏光显微镜观察了６７Ｐｂ（Ｍｇ１／３Ｎｂ２／３）Ｏ３－３３ＰｂＴｉＯ３固溶体铁电单晶在室温时 ９０°铁电畴结构．铁电畴结构与晶体质量有关，在正交偏光显微镜下光学透明晶体中存在着尺 寸为２～３ｍｍ的均匀大畴，不同极化方向的大畴重叠形成雾状区，使晶体表现出光学质量宏观 不均匀．在光学质量差的雾状晶体中则存在着 ０．１ｍｍ宽的｛１１０｝型带状孪生畴，使晶体形成 表面浮凸，带状畴内还存在着９０°亚畴．并对这些畴的形成作了讨论．
90° Ferroelectric domains in 67 Pb(Mg1/3Nb2/3) O3-33PbTiO3 single crystal were observed at room temperature by using crossed polarized light microscope(PLM). Ferroelectric domain structures depend on the quality of
single crystals. Large homogeneous domains of 2～3mm exist in optical transparent single crystals. Large domains with different polarization
orientation overlap to form opaque regions. {110} type 90° banded a-a domain with 90° sub-domain can be observed in translucent
crystals. The dimension of banded twin is about 0.1mm. As a result, surface relief appears on translucent crystal surface. The mechanism of forming
these domains was discussed.
参考文献
| [1] | Kuwata J, Uchino K, Nomura S. Ferroelectrics, 1981, 37: 579--582. [2] Kuwata J, Uchino K, Nomura S. Jpn. J. Appl. Phys., 1982, 21: 1298--1302. [3] Park S E, Shrout T R. J. Appl. Phys., 1997, 82: 1804--1811. [4] Yin Zhi-wen, Luo Hao-su, Wang Pin-chu, et al. AFM-2, Singapore, December 1998 (to be published) [5] 王评初, 罗豪甦, 李东林, 等. “迈向21世纪智能材料与器件研讨会”, 香港, 1999年5月. [6] Wang Ping-chu, Luo Hao-su, Li Dong-lin, et al. Ferroelectrics (accepted). [7] Hilton A D, Randall C A, Barber D J, et al. Ferroelectrics, 1989, 93: 379--386. [8] Xu Z, Kim M C, Li J F, Philosophical Magazine A, 1996, 74: 395--406. [9] Harada K, Shimanuki S, Kohayashi T, et al. J. Am. Ceram. Soc., 1998, 81: 2785--2788. [10] Merz W J. Phys. Rev., 1954, 95: 690--698. [11] Cook W R. J. Am. Ceram. Soc., 1956 39: 17--19. [12] Chou C C, Chen C S, Tseng D Y. Mater. Chem. Phys., 1996, 45: 103--107. [13] Hatano J, Bihan R L. Ferroelectrics, 1990, 111: 223--231. [14] Ivanova T I, Klyushkin L N, Rudyak V M. Ferroelectrics, 1989, 98: 59--67. [15] Balshakova N N, Nekrasova G M, Rudyak V M. Ferroelectrics, 1989, 97: 227--231. [16] Nishida M, Ohgi H, Itai I, et al. Acta Metall. Mater., 1995, 43: 1219--1227. [17] Khachaturyan A G, Shapiro S M, Semenovskaya S. Phys. Rev., 1991, 43: 10832--10843. [18] Devies R C, Burke J E. J. Am. Ceram. Soc., 1956, 40: 200--206. [19] Arlt G. J. Mater. Sci., 1990, 25: 2655--2666. [20] 冯端, 等. 金属物理学(第二卷 相变). 北京：科学出版社, 1998. 19--25. [21] 胡德林. 金属学及热处理. 西安：西北工业大学出版社，1995. 185. [22] 钟维烈. 铁电体物理学. 北京：科学出版社, 1996. 22--27. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%