Nd 3+ -Doped Scheelite-Type Multifunctional Materials-Their Thermal Stability and Magnetic Properties

• Published in: Materials Vol. 17; no. 19
• Main Authors: Tomaszewicz, Elżbieta, Dąbrowska, Grażyna, Fuks, Hubert, Kochmański, Paweł
• Format: Journal Article
• Language: English
• Published: Switzerland 04-10-2024
• Subjects: magnetic properties; solid solution; Nd3+ ion; thermal stability; scheelites
• ISSN: 1996-1944; 1996-1944

New Nd
-doped cadmium molybdato-tungstates with the chemical formula of Cd
▯
Nd
(MoO
)
(WO
)
(where
= 0.0283, 0.0455, 0.0839, 0.1430, 0.1875, 0.2000, 0.2500, and ▯ denotes a vacant site in the crystal lattice) were successfully synthesized by the high-temperature solid state reaction method, using CdMoO
and Nd
(WO
)
as the initial reactants. The structure and change in their lattice parameters as a function of Nd
ion concentration were investigated by the XRD (X-ray diffraction) method. The surface morphology and grain size of the doped materials were characterized by SEM (scanning electron microscopy). Their thermal properties and initial reactants were analyzed by DTA-TG (differential thermal analysis coupled with thermogravimetry) techniques. The optical properties of the Nd
-doped cadmium molybdato-tungstates, such as optical band gap, were determined by UV-vis-NIR (ultraviolet-visible-near infrared) spectroscopy. The EPR (electron paramagnetic resonance) technique provided information on the type of magnetic interactions between Nd
ions.