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Effects of External Electric Field on Ferroelectric Superlattice with Two Alternating Layers 下载免费PDF全文
The effects of the external electric field on the ferroelectric superlattice with two alternating layers have been studied using the transverse Ising model based on the effective-field theory with the differential technique. The hysteresis loops and susceptibility of the system have been given. The stronger the external electric field, the smaller the susceptibility, reflecting that the polarization is weaker. 相似文献
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The magnetization of ternary metal Prussian blue analogues A1xA21-x B,formed by three different sublattices A1,A2 and B,is studied by using the effective-field theory with self-spin correlations.Effects of the mole fraction x,the anisotropy and the transverse magnetic field on the magnetization are discussed. 相似文献
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利用无机低温水相合成法制备表面包覆L-半胱氨酸的CdTe/ZnTe核壳型量子点,测量不同溶液以及激发功率激光作用下该量子点的光谱特性。结果表明,该量子点吸收谱和荧光光谱峰值位置不随pH值变化,而荧光光强随pH值升高呈近似线性上升趋势;不同缓冲液对该量子点荧光光强无影响,但随孵育时间延长,荧光强度略有下降;在强激光照射下QDs会被快速光漂白,选择适当的激光功率(<100 μW),可降低漂白速率,实现长时间稳定测量。因此,该量子点具有较好的生物稳定性和光稳定性,将其与血铁蛋白相连形成靶向共轭纳米粒,可成功用于HeLa细胞标记。细胞内量子点光漂白实验表明,细胞微环境会影响量子点的光稳定性,加速量子点的光漂白。 相似文献
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This paper stuides the magnetization and quantum fluctuations of an
antiferro-antiferromagnetic (AF-AF) double-layer at zero
temperature. It is found that the exchanges and anisotropy constants
affect the quantum fluctuations of spins. If the anisotropy exists,
there will be no acoustic energy branch in the system. The
anisotropy constant, antiferromagnetic intralayer and interlayer
coupling have important roles in a balance of the quantum
competition. 相似文献
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