Order-disorder effects and self-activated photoluminescence in hydroxyapatite nanoparticles via impurities incorporation - Zapata, Angelica Maria Mazuera; Pacífico, Lívia Gabrielle; Zucolotto, Valtencir; Vilela, Raquel Riciati do Couto; Machado, Thales Rafael (Semana Integrada do Instituto de Física de São Carlos - SIFSC, 2023)