Structure and dielectric properties of box Ba_{2}hbox Cu_{x}hbox Y_{1-x} hbox TaO_{6-y}Ba 2 Cu x Y 1 - x TaO 6 - y double perovskite - Oliveira, Felipe Souza; Santos, Carlos Alberto Moreira dos; Machado, Antonio Jefferson da Silva; Banerjee, P. K; Franco Junior, A (SN Applied Sciences, 2019)