Crystallization of high-temperature superconductors YBa_2Cu_3O_(0.5+x)and(La,Sr)_2CuO_(4-y)from homogeneous nonstoichiometric melts has been studied.Thephase d
Hardness is an important solid state property(1)which is commonly stu-died to determine the mechanical strength and the breaking strength of the ma-terials.Vic