■ spectroscopy studies of BaFe12-2xCr2xO19

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■ spectroscopy studies of BaFe_12-2xCr_2xO₁₉

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- ■ spectroscopy studies of BaFe_12-2xCr_2xO₁₉
- NUCLEAR TECHNIQUES Issue 12, (1994)
- 作者机构：
  
  南京大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： O657.3
- Published：01 December 1994
- 稿件说明：
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[1]焦洪震,叶英,都有为.BaFe_（12－2x）Cr_（2x）O_（19）的穆斯堡尔谱学研究[J].核技术,1994(12):737-741.

■ spectroscopy studies of BaFe_12-2xCr_2xO₁₉[J]. Nuclear techniques, 1994, (12).
[1]焦洪震,叶英,都有为.BaFe_（12－2x）Cr_（2x）O_（19）的穆斯堡尔谱学研究[J].核技术,1994(12):737-741. DOI：

■ spectroscopy studies of BaFe_12-2xCr_2xO₁₉[J]. Nuclear techniques, 1994, (12). DOI：

摘要

对铬离子置换的钡铁氧体ＢａＦ１２－２ｘＣｒ２ｘＯ１９（ｘ＝０，１，２，３，３．５，４）进行了穆斯堡尔港学研究。结果表明，Ｃｒ离子始终不进人４ｆ１晶位；对于２ａ、４ｆ２、１２ｋ品位呈随机置换，没有明显的优先占据趋势，从ｘ＝４时的穆斯堡尔诺看到，Ｃｒ离子也进人２ｂ位，但置换量很小；随着Ｃｒ离子含量的增加，材料的居里温度降低，下降速率约为５０Ｋ／Ｃｒ原子。

Abstract

Cr ion substituted barium hexaferrite BaFe12-2xCr2xO19 （x=0

3.5 and 4） has been studied by means of Mossbauer spectroscopy.Cr ions are not found to occupy 4f1 sites at all. For the distribution of Cr ions among 2a

4f2 and 12k sites

our data reveal a random occupation and do not show a remarkable preferential substitution.From Mossbauer spectra for x=4

Cr ions are observed entering 2b sites

but the number off Fe ions substituted by Cr ions in this site is very small.The Carie temperature of the material decreases almost linearly with x at a rate of about 50K/Cr atom.

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