Size-Dependent Structural, Magnetic and Magnetothermal Properties of Y3Fe5O12 Fine Particles Obtained by SCS

Abstract

Iron-containing oxides are the most important functional substance class and find a tremendous variety of applications. An attractive modern application is their use in biomedical technologies as components in systems for imaging, drug delivery, magnetically mediated hyperthermia, etc. In this paper, we report the results of the experimental investigation of submicron Y3Fe5O12 garnet particles obtained in different sizes by solution combustion synthesis (SCS) using glycine organic fuel to discuss the interdependence of peculiarities of the crystal and magnetic structure and size’s influence on its functional magnetothermal performance. A complex study including Mössbauer and Raman spectroscopy accompanied by X-ray diffractometry, SEM, and measurements of field and temperature magnetic properties were performed. The influence of the size effects and perfectness of structure on the particle set magnetization was revealed. The ranges of different mechanisms of magnetothermal effect in the AC magnetic field were determined.

Synthesis, properties and ionic conductivity of ceramic solid electrolyte - multicomponent garnet (Y, Ln)3Fe5O12

“…The probable reason for such a difference is the difference in the methods of garnet synthesis. It is known [22] that pyrolysis is a solution method that reduces the final annealing temperature [5]. Solid-phase synthesis, on the contrary, requires elevated temperatures and prolonged annealing.…”

“…In particular, solid state synthesis [16,17] was most widely used to obtain multicomponent garnets; the sol-gel method [18,19] and the coprecipitation method [20,21], as well as the pyrolysis method were used to synthesize individual and high-entropy garnets. [22]. It should be noted that the main advantage of "wet" chemical methods over the solid state reaction method is that they provide mixing of materials at the molecular level [23].…”