What are thd factor on which rigidity modulus depends?

The rigidity modulus, also known as the shear modulus, depends primarily on the material's intrinsic properties, including its composition, temperature, and microstructure. Additionally, factors such as the type of bonding between atoms, the arrangement of molecules, and the presence of impurities can influence the rigidity modulus. The mechanical history of the material, including previous stress and strain, may also play a role in its rigidity behavior.