Low-temperature synthesis and microstructure-property study of single-phase yttrium iron garnet (YIG) nanocrystals via a rapid chemical coprecipitation

High saturation magnetization, low coercivity and fine YIG nanoparticles prepared by modifying co-precipitation method

“…However, the most prevalent method for synthesizing magnetic NPs is the chemical coprecipitation technique [23][24][25]. There are several reports on synthesis of YIG magnetic NPs using chemical co-precipitation technique due to its main characteristic features such as simplicity and controllability of the process, low cost, high turnout [26,27]. It appears likely that the synthesis of fine YIG-NPs at low processing temperatures still has plenty of room to delve in.…”

Phase and magnetic properties evolutions of Y3−x(CaZr)xFe5−xO12 by the sol–gel method

“…In fact, YFeO 3 phase is detected in all substituted samples of our research in the course of the phase formation. The formed phase YFeO 3 , as often reported in literature, is an inevitable product of poor chemical homogeneity in the precipitates by co-precipitation method [6]. Y 3 þ and Fe 3 þ can homogeneously mix in sol-gel method, so YFeO 3 was not detected in the non-substituted sample.…”

“…However, the sintering temperature of YIG is far beyond the melting points of most electrodes, for example 961°C for Ag, 1063°C for Au, 1083°C for Cu and 1145°C for Ag-Pd. To overcome these troubles, various wet-chemical methods have been used to synthesize finer and more homogenous YIG powders, such as chemical co-precipitation [6][7][8], sol-gel method [9][10][11][12], sol-gel combustion [13][14][15]. Among them, the sol-gel method has attracted much attention due to the finer and more homogeneous particles produced.…”

One-step synthesis of yttrium orthoferrite nanocrystals via sol–gel auto-combustion and their structural and magnetic characteristics

“…Their thermochemical behaviour analysis was conducted by thermogravimetry and differential thermal analysis (TG-DTA, PerkinElmer Diamond) in the temperature range 25e700 C at a heating rate of 10 C min À1 in flowing air (100 ml min À1 ). The crystal phases of as-burnt products were identified by X-ray diffractometry (XRD, Thermal Scientific ARL X'TRA) using Cu-Ka radiation (l ¼ 1.5405 A) with a tube power of 40 kV/35 mA and, to derive the mean crystallite size of as-synthesized YFeO 3 powder, MDIJade-5 software was employed to analyse the XRD data with the reflection line profiles fitted by a pseudo-Voigt function and the WilliamsoneHall relation [23]. In addition, the morphology and other microstructural features were examined by field emission scanning electron microscopy (FESEM, Hitachi S-4800) and transmission electron microscopy (TEM, JEOL JEM-2010 UHR), and the magnetic measurements were accomplished at room temperature on a vibrating sample magnetometer (VSM, HH-15) with the powder specimen of YFeO 3 nanocrystals compacted in a tiny quartz tube.…”