Resky Irfanita, P.E.D. Putra, B. Triono, M.A. Baqiya, Darminto, Krongthong Kamonsuangkasem, Chatree Saiyasombat
We have succeeded in synthesizing electron-doped cuprate T’-Pr2-xCexCuO4 (PCCO) with x = 0 and 0.10 nanocrystals prepared by the chemically dissolved method. Reduction annealing of the PCCO samples at 700oC under a flowing argon gas atmosphere has been performed for removing excess oxygen at the apical sites. The x-ray diffraction (XRD) data show that the reduction annealing process decreases c-axis length indicating successful removal of the excess oxygen. The bond distortion of PCCO including coordination number and bond distance between the absorber atoms with the nearest neighboring atoms (Cu-O) was investigated by extended x-ray absorption fine structure (EXAFS) using Cu K-edge. The implication of the results is discussed based on the tremendous influence of oxygen vacancies on the magnetism of the nanosized T’-cuprate at the normal state. © 2020 Trans Tech Publications Ltd, Switzerland.
Advanced Materials Research Group, Department of Physics, Institut Teknologi Sepuluh Nopember (ITS), ITS Campus, Keputih Sukolilo, Surabaya, 60111, Indonesia; Department of Physics, Universitas Negeri Makassar, Daeng Tata Raya St., Makassar, 90223, Indonesia
