Physica Scripta ( IF 2.9 ) Pub Date : 2021-06-03 , DOI: 10.1088/1402-4896/ac03e0 Atif Mossad Ali 1 , Shams A M Issa 2, 3 , H Algarni 1 , H O Tekin 4, 5 , Hesham M H Zakaly 2, 6 , M A Sayed 1 , M Rashad 2
In this study, Barium ferrite (BaFe12O19) was prepared in powder form using the sol-gel method. Next, structural, surface morphology, and radiation shielding properties of Barium ferrite compound were determined using experimental and simulation methods. The structural and surface morphology were characterised using x-ray diffraction (XRD) and the scanning electron microscope (SEM). The formation of hexagonal structure has been verified by XRD patterns for synthesised pure BaFe12O19. The amplitude of XRD peaks declines as the FWHM rises, indicating that crystallinity has degraded and crystallite size has decreased. SEM images provide accurate representations of surfaces. The topography of the surface is characterized by the presence of several spherical granules. Additionally, the mean diameter of the spherical granules was determined to be approximately 30 nm using the histogram. Moreover, FLUKA simulation code was used to calculate some radiation shielding parameters such as linear attenuation coefficients (4.639, 0.554, 0.336 and 0.2013 cm−1), mass attenuation coefficients (0.8787, 0.1049, 0.0686 and 0.0381 cm2 g−1), half value layers (0.1494, 1.2512, 2.0629 and 3.4434 cm) and mean free path values (0.21554, 1.8051, 2.9762and 4.9677 cm) against 0.81, 0.356, 0.911 and 2.614 MeV photon energies, respectively. The results showed that synthesized Barium ferrite has good surface renditions and distinguished spherical granules along with promising gamma-ray attenuation properties.
中文翻译:
钡铁氧体粉末的结构、表面形貌和辐射屏蔽性能
在本研究中,使用溶胶-凝胶法制备了粉末形式的钡铁氧体 (BaFe 12 O 19 )。接下来,使用实验和模拟方法确定钡铁氧体化合物的结构、表面形貌和辐射屏蔽性能。使用 X 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 表征结构和表面形貌。已通过合成纯 BaFe 12 O 19 的XRD 图案验证了六边形结构的形成. 随着 FWHM 的升高,XRD 峰的幅度下降,表明结晶度降低,晶粒尺寸减小。SEM 图像提供表面的准确表示。表面的形貌特征在于存在几个球形颗粒。此外,使用直方图确定球形颗粒的平均直径约为 30 nm。此外,利用FLUKA仿真代码计算了一些辐射屏蔽参数,如线性衰减系数(4.639、0.554、0.336和0.2013 cm -1)、质量衰减系数(0.8787、0.1049、0.0686和0.0381 cm 2 g -1 ))、半值层 (0.1494、1.2512、2.0629 和 3.4434 cm) 和平均自由程值 (0.21554、1.8051、2.9762 和 4.9677 cm) 分别针对 0.81、0.356 和 2.615 Megie 能能 结果表明,合成的钡铁氧体具有良好的表面再现性和独特的球形颗粒以及良好的伽马射线衰减特性。