Mössbauer and X-ray photoelectron spectroscopic studies of heat-treated calcium borate glasses containing iron
Mössbauer and X-ray photoelectron spectroscopic studies of heat-treated calcium borate glasses containing iron
复制标题
热处理含铁硼酸钙玻璃的穆斯堡尔和 X 射线光电子能谱研究
DOI：
10.1007/bf00552826
复制
发表时间：
1974
影响因子：
4.5
通讯作者：
A. Bishay
中科院分区：
文献类型：
--
作者：
M. Tricker;J. Thomas;M. H. Omar;A. Osman;A. Bishay
用~（57）Fe穆斯堡尔谱和X射线光电子能谱研究了几种含铁硼酸钙玻璃的直流电导率随退火温度的变化。未退火玻璃样品的穆斯堡尔谱与六配位氧环境中主要存在三价铁的情况相容。退火后的部分有序的玻璃相被发现所指示的减少穆斯堡尔共振的线宽。较长的退火时间导致α-Fe 2 O3的沉淀，通过穆斯堡尔谱中逐渐出现的六线磁分裂图案清楚地识别。这些变化与样品直流电导率的变化定性相关。所有样品的结合能和每种元素的代表性核心水平的半峰全宽显示出显着的一致性。此外，铁的2 p光谱纳入玻璃相基本上是类似的沉淀的Fe 2 O3。
57Fe Mössbauer and X-ray photoelectron spectroscopic studies have been carried out on a number of iron-containing calcium borate glasses which show large changes in d.c. conductivity upon annealing. The Mössbauer spectra of the unannealed glass samples are compatible with the presence of predominantly ferric iron in a six-co-ordinate oxygen environment. Upon annealing a partial ordering of the glassy phase is found as indicated by a reduction in the linewidth of the Mössbauer resonances. Longer annealing times lead to the precipitation ofα-Fe2O3clearly identified by the gradual appearance of a six-line magnetically split pattern in the Mössbauer spectra. These changes are qualitatively correlated with changes in d.c. conductivity of the samples. The binding energies and full width at half maxima of representative core levels of each element present show a remarkable consistency for all samples. Moreover the 2p spectra of iron incorporated in the glassy phase are essentially similar to that of the precipitated Fe2O3.