TY - JOUR
T1 - Effect of X-ray irradiation on the magnetic properties of REBa2Cu3Oy (RE = Y, Nd, or Gd)
AU - Kuroda, Yuki
AU - Koshimizu, Masanori
AU - Fujimoto, Yutaka
AU - Asai, Keisuke
N1 - Funding Information:
This work was partially supported by a Grant-in-Aid for Scientific Research (B) (No. 15H04238 , 2015–2017) and by the Cooperative Research Project of the Research Institute of Electronics, Shizuoka University – Japan.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11/15
Y1 - 2018/11/15
N2 - We examined the effect of X-ray irradiation on the magnetic properties of REBa2Cu3Oy (REBCO; RE = Y, Nd, or Gd). In all the samples, Tc0, which is defined as the temperature below which the magnetic susceptibility is lower than zero, did not change significantly after irradiation within the measurement accuracy. On the other hand, the magnetic susceptibilities after irradiation were lower than those before irradiation in all the samples. These results, which are consistent with those observed under light irradiation, indicate that X-ray irradiation enhances the superconductive properties of these materials. This enhancement results from hole doping in the CuO2 plane via the generation of electron–hole pairs by X-ray irradiation and subsequent trapping of the electrons at oxygen vacancies. Relaxation of the irradiation effect and the electron behavior after irradiation were studied by analyzing the magnetic properties and Raman spectra.
AB - We examined the effect of X-ray irradiation on the magnetic properties of REBa2Cu3Oy (REBCO; RE = Y, Nd, or Gd). In all the samples, Tc0, which is defined as the temperature below which the magnetic susceptibility is lower than zero, did not change significantly after irradiation within the measurement accuracy. On the other hand, the magnetic susceptibilities after irradiation were lower than those before irradiation in all the samples. These results, which are consistent with those observed under light irradiation, indicate that X-ray irradiation enhances the superconductive properties of these materials. This enhancement results from hole doping in the CuO2 plane via the generation of electron–hole pairs by X-ray irradiation and subsequent trapping of the electrons at oxygen vacancies. Relaxation of the irradiation effect and the electron behavior after irradiation were studied by analyzing the magnetic properties and Raman spectra.
KW - Hole doping
KW - Superconductors
KW - X-ray
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U2 - 10.1016/j.nimb.2018.02.027
DO - 10.1016/j.nimb.2018.02.027
M3 - Article
AN - SCOPUS:85042851573
SN - 0168-583X
VL - 435
SP - 194
EP - 197
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -