Magnetic and thermal M枚ssbauer effect scans: a new approach
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- 作者：G. A. Pasquevich ; P. Mendoza Z茅lis ; F. H. S谩nchez ; M. B. Fern谩ndez van Raap ; A. Veiga and N. Mart铆nez
- 关键词：M枚ssbauer effect ; scans ; phase transitions ; magnetic response
- 刊名：Hyperfine Interactions
- 出版时间：January, 2006
- 出版年：2006
- 期刊代码：18_03043843
- 类别：cp
- 卷：167
- 期：1-3
- 页码：839-844
- 数据来源：sp
摘要
M枚ssbauer transmission recorded at fixed photon energies as a function of a given physical parameter such as temperature, external field, etc. (M枚ssbauer scan), is being developed as a useful quantitative tool, complementary of M枚ssbauer spectroscopy. Scans are performed at selected energies, suitable for the observation of a given physical property or process. It is shown that one of main advantages of this approach is the higher speed at which the external physical parameter can be swept, which allows the recording of quasi-continuous experimental response functions as well as the study of processes which occur too fast to be followed by M枚ssbauer spectroscopy. The applications presented here are the determination of the temperature dependence of the 57Fe hyperfine field in FeSn<sub>2sub>, the thermal evolution and nanocrystallization kinetics of amorphous Fe<sub>73.5sub>Si<sub>13.5sub>Cu<sub>1sub>Nb<sub>3sub>B<sub>9sub> and the measurement of the dynamic response of Fe magnetic moments in nanocrystalline Fe<sub>90sub>Zr<sub>7sub>B<sub>3sub> to an external ac field.