Welcome to the PF.Mehran said:i work on phononic crystals and i want to find solids with diffrent sound velocities and mass density in diffrent temprature
i can just find BST
but i need more matherials
please help me my friends
best regards
In general, as the temperature of a solid increases, the sound velocity also increases. This is because at higher temperatures, the particles in the solid are vibrating faster and are able to transmit sound waves more quickly.
The sound velocity in a solid depends on its physical properties, such as density, elasticity, and crystal structure. Different solids have different combinations of these properties, leading to variations in sound velocity at different temperatures.
As a solid melts and transitions into a liquid, the sound velocity decreases. This is because the particles in a liquid are less tightly packed and can move more freely, leading to a slower transmission of sound waves.
Yes, there is a limit to how high or low a sound velocity can be in a solid. At very high temperatures, the particles in a solid are moving so quickly that they are no longer able to transmit sound waves efficiently. Similarly, at very low temperatures, the particles are moving too slowly to effectively transmit sound waves.
In general, increasing pressure on a solid will increase its sound velocity at any given temperature. This is because higher pressure leads to a tighter packing of particles, making it easier for sound waves to travel through the solid.