Structural, Optical and Magnetic Properties of (1−x) YFeO3 + (x) Sr2Bi4Ti5O18 (where 0 ≤ x ≥ 0.005) Nanomaterials

Abstract

Continuous efforts are being made on YFeO3 (YFO) nanomaterial to improve the magnetization value in different ways for photocatalysis and magneto-optical application point of view because of low energy bandgap (1.8–2.8 eV). In this regard, we made solid solutions with Sr2Bi4Ti5O18 (SBT) nanomaterial in an effort to increase the magnetization value of YFO nanomaterial. Here prepared the (1−x) YFO + x SBT (where x = 0, 0.00125, 0. 0025, and 0.005) nanomaterials via sol-gel route, and thus obtained individually powders were calcined at 1050 °C/3 h. The single phase of YFO without any unreacted or impurity phases were observed up to x = 0.25 mol% via X-ray diffraction studies. Calculated average crystallite size as well as dislocation density suggesting that the improvement of crystalline nature YFO sample with an increase of SBT content in YFO. The improved magnetization value (4.121 emu g−1), which is 1.3 times higher than that of YFO (3.188 emu g−1), for the x = 0.25 mol% SBT in YFO was observed, however their coercivity (39.4 Oe) is almost similar for both samples. The computed optical bandgap was found to be reduced with an increase of SBT mol% in YFO. We draw the conclusion from this analysis that SBT in YFO (x = 0.25 mol%) will make promising candidates for various magnetic applications.