Photo-Induced Phenomena in Ba4-xLaxTi3O12
Photo-Induced Phenomena in Ba4-xLaxTi3O12
复制标题
Ba4-xLaxTi3O12 中的光致现象
DOI：
10.1080/00150193.2012.676973
复制
发表时间：
2012
期刊：
影响因子：
0.8
通讯作者：
and Makoto Iwata
中科院分区：
文献类型：
--
作者：
Tomori Yanagisawa;Yuhji Tsujimi;and Makoto Iwata
在Bi_（4-x）La_xTi_3 O_（12）（BLT_（0.41））中发现了两种新的光诱导现象。其中之一是“光暗化现象（PD）";激光照射区域在低于T = 390°C时变黑，其中激光的波长为514.5 nm。另一种是“光可擦除记忆现象（PEM）"，即当同一束激光照射在距离黑化区isd= 80 μm的另一个区域时，由PD产生的黑化区变得透明。当d = 80 μm时，PEM发生在230°C ~ 390°C的温度范围内;当T = 250°C时，PEM发生在d <100 mm的距离范围内。由于这些现象在纯Bi_4 Ti_3 O_（12）中不发生，因此La ~（3+）离子一定起着重要作用。
Two photo-induced phenomena have been newly discovered in Bi4-xLaxTi3O12(BLT0.41). One of them is”photo-darkening phenomenon (PD)”; the laser illuminated area turns black belowT= 390°C, where the wavelength of the laser is 514.5 nm. The other is”photo-erasable memory phenomenon (PEM)”; the blackened area produced by the PD becomes transparent when the same laser is illuminated on the other area where isd= 80 μm away from the blackened area. The PEM is found to occur in the temperature range between 230°C and 390°C in case ofd= 80 μm and in the distance range ofd<100 mm atT= 250°C. Since these phenomena do not occur in pure Bi4Ti3O12, the La3+ions must play an important role.