57Fe conversion electron Mössbauer spectroscopy was used to study the effect of swift heavy ion irradiation on electrochemically deposited metallic pure a-iron. We succeeded in preparing superparamagnetic iron by irradiating the electrochemically prepared thin a-iron films using 247 MeV Kr ions with a fluence of 1×1013 ion cm-2 which converted 50% of crystalline a-iron into amorphous and superparamagnetic phases, the latter being >20%. The results are discussed in terms of the thermal spike model for the formation of the amorphous phase which could be essential for the formation of superparamagnetic iron.
- superparamagnetic iron; amorphous iron; 57Fe conversion electron Mössbauer spectroscopy; Swift heavy ion irradiation; electrodeposition
Kuzmann, E., Stichleutner, S., Homonnay, Z., Havancsák, K., Chisholm, C. U., El-Sharif, M., Skuratov, V. A., Nakanishi, A., & Nomura, K. (2016). Generation of superparamagnetism in metallic α-iron by swift heavy ion irradiation. Radiation Physics and Chemistry, 127, 165-168. https://doi.org/10.1016/j.radphyschem.2016.06.032