Hi, I work in a lab and we will be working with sapphire at low temperatures. Our apparatus will be going under different stresses and I was wondering what type of stresses and strain it can take at temperatures down less than 4K. I have been looking for elastic moduli figures, but I can't find any values for sapphire less than room temperature. As a company that deals with sapphire for optics and mechanical purposes, I was wondering if you had any information?
You are right. Nobody did investigate the sapphire mechanical properties by helium temperature. I didn`t hear about any results.
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