STUDY OF DEVICES AND METHODS FOR MEASURING THE MAGNETIC AND MAGNETIC-OPTICAL PROPERTIES OF RARE EARTH IONS. British Journal of Global Ecology and Sustainable Development, [S. l.], v. 45, p. 22–24, 2025. Disponível em: https://journalzone.org/index.php/bjgesd/article/view/774. Acesso em: 31 jan. 2026.