Advances of ferrous and ferric Mössbauer Recoilless Fractions in minerals and glasses

Advances of ferrous and ferric Mössbauer Recoilless Fractions in minerals and glasses
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铁和铁穆斯堡尔无反冲分数在矿物和玻璃中的进展

DOI:
10.1016/j.gsf.2021.101316
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发表时间:
2021-10
影响因子:
8.9
通讯作者:
Zhang Hongluo
Zhang Hongluo
中科院分区:
地球科学1区
文献类型:
--
作者:
Zhang Hongluo

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穆斯堡尔光谱已广泛用于表征固体材料的三价铁 (Fe3+) 和二价铁 (Fe2+) 比例和配位。为了准确地获得这些,无后坐力分数是必不可少的。含铁矿物(包括氧化物、羟基氧化物、硅酸盐、碳酸盐、磷酸盐和二硫族化物)和硅酸盐玻璃的无反冲部分(f)通过其中心位移或吸收面积的温度依赖性与德拜模型近似进行评估。一般来说,除二硫属化物外,矿物中三价铁的解析德拜温度(θD)在400至550 K范围内的中心位移明显大于300至400 K范围内的二价铁,这与先前工作的结论一致。中心位移模型 (CSM) 解析的 f(Fe3+)RT 范围为 0.825 至 0.925,大于 f(Fe2+)RT 所获得的范围为 0.675 至 0.750。同时,吸收的温度依赖性所解出的 θDandfresolved 通常低于中心位移所解出的 θDandfresolved,特别是对于三价铁。 f(Fe3+) 和f(Fe2+) 之间的显着差异表明对穆斯堡尔谱解析的Fe3+/(Fe3++Fe2+) 进行无反冲分数校正的必要性。
Mössbauer spectroscopy has been used widely to characterize the ferric (Fe3+) and ferrous (Fe2+) proportions and coordination of solid materials. To obtain these accurately, the recoilless fraction is indispensible. The recoilless fractions (f) of iron-bearing minerals, including oxides, oxyhydroxides, silicates, carbonates, phosphates and dichalcogenides, and silicate glasses were evaluated from the temperature dependence of their center shifts or absorption area with the Debye model approximation. Generally, the resolved Debye temperature (θD) of ferric iron in minerals, except dichalcogenides, through their center shifts ranging from 400 to 550 K, is significantly larger than ferrous iron ranging from 300 to 400 K, which is consistent with the conclusion from previous work. The resolvedf(Fe3+)RTwith the center shift model (CSM) ranges from 0.825 to 0.925, which is larger than that obtained forf(Fe2+)RT, which ranges from 0.675 to 0.750. Meanwhile, the θDandfresolved from temperature-dependence of absorption are generally lower than from center shifts, especially for ferric iron. The significant difference betweenf(Fe3+) andf(Fe2+) indicates the necessity of recoilless fraction correction on the Fe3+/(Fe3++Fe2+) resolved from Mössbauer spectra.
DOI: 10.1016/0029-554x(61)90122-7
发表时间: 1961-06
期刊: Nuclear Instruments and Methods
影响因子: --
作者:
S. Margulies;J. Ehrman
通讯作者: S. Margulies;J. Ehrman
DOI: 10.1103/physrevlett.4.274
发表时间: 1960-03
影响因子: 8.6
作者:
R. Pound;G. A. Rebka
通讯作者: R. Pound;G. A. Rebka
DOI: 10.2138/am-2003-0722
发表时间: 2003-07
影响因子: 3.1
作者:
S. Eeckhout;E. De Grave
通讯作者: S. Eeckhout;E. De Grave
DOI: 10.1039/an9608500823
发表时间: 1960
期刊: Analyst
影响因子: 4.2
作者:
A. D. Wilson
通讯作者: A. D. Wilson
DOI: 10.1007/bf00202316
发表时间: 1992-11
影响因子: 1.4
作者:
Y. L. Chen;B. F. Xu;J. G. Chen;Y. Ge
通讯作者: Y. L. Chen;B. F. Xu;J. G. Chen;Y. Ge