Kagan Mikhail A, Khazanov Efim A
Davey Laboratory, Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802 , USA.
Appl Opt. 2004 Nov 10;43(32):6030-9. doi: 10.1364/ao.43.006030.
We have developed a model that describes thermally induced birefringence in polycrystalline ceramics that are exposed to a magnetic field. Conditions under which traditional compensation techniques (for glass and single crystals) can be effective for ceramics have been found. It is shown that a ceramic is almost equivalent to a [111]-oriented crystal if the ratio of the rod length to the grain size is approximately 300 or more. In particular, residual depolarization (after the compensation techniques are applied) is inversely proportional to this ratio, which is an important consequence of the random nature of thermally induced birefringence in ceramics.
我们开发了一个模型，该模型描述了暴露于磁场中的多晶陶瓷中的热致双折射现象。已经找到了传统补偿技术（用于玻璃和单晶）对陶瓷有效的条件。结果表明，如果棒状长度与晶粒尺寸之比约为300或更大，则陶瓷几乎等同于[111]取向的晶体。特别地，（应用补偿技术后）残余去极化与此比率成反比，这是陶瓷中热致双折射随机性的一个重要结果。
