Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Iwase, Akihiro*; Fukuda, Kengo*; Saito, Yuichi*; Okamoto, Yoshihiro; Semboshi, Satoshi*; Amekura, Hiroshi*; Matsui, Toshiyuki*
Journal of Applied Physics, 132(16), p.163902_1 - 163902_10, 2022/10
Times Cited Count:0 Percentile:0(Physics, Applied)Amorphous SiO samples were implanted with 380 keV Fe ions at room temperature. After implantation, some of the samples were irradiated with 16 MeV Au ions. magnetic properties were investigated using a SQUID magnetometer, and the morphology of the Fe-implanted SiO samples was examined using transmission electron microscopy and X-ray absorption spectroscopy (EXAFS and XANES), which showed that the size of Fe nanoparticles was increasing The size of Fe nanoparticles increased with increasing Fe implantation amount; some of the Fe nanoparticles consisted of Fe oxides, and the valence and structure of Fe atoms became closer to that of metallic -Fe with increasing Fe injection amount. The magnetization-field curve of the sample implanted with a small amount of Fe was reproduced by Langevin's equation, suggesting that the Fe nanoparticles behave in a superparamagnetic manner. In addition, when a large amount of Fe was implanted, the magnetization-magnetic field curve shows a ferromagnetic state. These magnetic property results are consistent with the X-ray absorption results. Subsequent 16 MeV Au irradiation crushed the Fe nanoparticles, resulting in a decrease in magnetization.
Izumiyama, Yuki*; Doi, Yoshihiro*; Wakeshima, Makoto*; Hinatsu, Yukio*; Nakamura, Akio; Ishii, Yoshinobu
Journal of Solid State Chemistry, 169(1), p.125 - 130, 2002/11
Times Cited Count:41 Percentile:81.15(Chemistry, Inorganic & Nuclear)no abstracts in English
; Ara, Katsuyuki;
Proc. of 9th Int. Symp. on Reactor Dosimetry, 0, p.785 - 792, 1998/00
no abstracts in English
Hinatsu, Yukio; *; Ishida, Kazushige*
Journal of Solid State Chemistry, 120, p.49 - 53, 1995/00
Times Cited Count:8 Percentile:36.76(Chemistry, Inorganic & Nuclear)no abstracts in English
Hinatsu, Yukio
Journal of Alloys and Compounds, 215, p.161 - 167, 1994/00
Times Cited Count:9 Percentile:60.03(Chemistry, Physical)no abstracts in English
Hinatsu, Yukio
Nihon Genshiryoku Gakkai-Shi, 36(8), p.714 - 726, 1994/00
Times Cited Count:1 Percentile:17.88(Nuclear Science & Technology)no abstracts in English
Hinatsu, Yukio
Nihon Genshiryoku Gakkai-Shi, 35(8), p.701 - 717, 1993/08
Times Cited Count:0 Percentile:3.85(Nuclear Science & Technology)no abstracts in English
Yamamoto, Etsuji; Haga, Yoshinori; Sakai, Hironori
no journal, ,
no abstracts in English