| Observation of spontaeous Polarization of tourmaline |
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| 作者姓名： | 金宗哲 冀志江 梁金生 王静 隋同波 |
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| 作者单位： | Environment Engineering Institute, China Building Materials Academy, Beijing 100024, China;Environment Engineering Institute, China Building Materials Academy, Beijing 100024, China; Hebei Institute of Architectural and Civil Engineering, Zhangjiakou 075024, China;Environment Engineering Institute, China Building Materials Academy, Beijing 100024, China;Environment Engineering Institute, China Building Materials Academy, Beijing 100024, China;Environment Engineering Institute, China Building Materials Academy, Beijing 100024, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 50272062) and by the National High Technology Development Program of China (Grant No 2001AA322050). |
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| 摘 要： | Since Tetsujiro kubo indirectly found the spontaneous polarization of tourmaline through absorbing copper ions in copper sulfate aqueous solutions in 1980s,there is no other evidence to demonstrate the existence of the spontaneous polarization in tourmaline.It was ound that after a tourmaline particle was bombarded by electron beams,a spot appeared on the surface of the sample,and that one half of the spot was brighter than the other half under scanning electron icroscope.After touraline was treated for 2h at 1223K and then bombarded by electron beams,the bombardment spot did not appear because the crystal structure of tourmaline is destroyed.The existence of the bombardment spot accounts for the spontaneous polarization.The shape and brightness of the bombardment spot not only shows the existence of a surface electric filed induced by spontaneous polarization.but also the relation with the direction of the crystal plane of tourmaline.
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| 关 键 词： | 电石 硅酸盐矿石 自发极化 |
| 收稿时间： | 2002-06-10 |
Observation of spontaneous polarization of tourmaline |
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| Jin Zong-Zhe,Ji Zhi-Jiang,Liang Jin-Sheng,Wang Jing and Sui Tong-Bo.Observation of spontaeous Polarization of tourmaline[J].Chinese Physics B,2003,12(2):222-225. |
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| Authors: | Jin Zong-Zhe Ji Zhi-Jiang Liang Jin-Sheng Wang Jing and Sui Tong-Bo |
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| Institution: | Environment Engineering Institute, China Building Materials Academy, Beijing 100024, China; Environment Engineering Institute, China Building Materials Academy, Beijing 100024, China; Hebei Institute of Architectural and Civil Engineering, Zhangjiakou 075024, China |
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| Abstract: | Since Tetsujiro Kubo indirectly found the spontaneous polarization of tourmaline through absorbing copper ions in copper sulfate aqueous solutions in 1980s, there is no other evidence to demonstrate the existence of the spontaneous polarization in tourmaline. It was found that after a tourmaline particle was bombarded by electron beams, a spot appeared on the surface of the sample, and that one half of the spot was brighter than the other half under scanning electron microscope. After tourmaline was treated for 2 h at 1223K and then bombarded by electron beams, the bombardment spot did not appear because the crystal structure of tourmaline is destroyed. The existence of the bombardment spot accounts for the spontaneous polarization. The shape and brightness of the bombardment spot not only shows the existence of a surface electric field induced by spontaneous polarization, but also the relation with the direction of the crystal plane of tourmaline. |
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| Keywords: | spontaneous polarization tourmaline electron beam bombardment |
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