对二溴苯/对二氯苯固溶体纳米粒子加速扩散的观察
Observation of the Accelerated Diffusion in Nanoparticles of Paradibromobenzene /Paradihlorbenzene Solid Solution
摘要：
合成了对二氯苯分子中的对二溴苯纳米粒子。测量了这些纳米颗粒的拉曼光谱。在对二氯苯分子扩散时，在对二溴苯中形成纳米固溶体。拉曼光谱反映了纳米颗粒在扩散时的结构变化。与固溶体单晶不同，在纳米颗粒中，在室温下观察到加速扩散$D = 1.3 \pm 0.02 10^{-11} cm^2/s$。计算表明，扩散加速是由于纳米颗粒尺寸减小时晶格参数放大所致。
英文摘要：
P-dibromobenzene nanoparticles in a case of paradihlorbenzol molecules have been synthesized. Raman spectrums of these nanoparticles are measured. At diffusion of molecules of paradihlorbenzol in a pdibromobenzene nanoparticle solid solution formed. Modifications in structure of nanoparticles at diffusion are reflected in Raman spectrums. Unlike a solid solution single crystal, in nanoparticles the accelerated diffusion, $D = 1.3 \pm 0.02 10^{-11} cm^2/s$, is observed at room temperature. Calculations show that the accelerated diffusion is caused by magnification of parametres of a lattice at reduction of sizes of nanoparticles.
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