@article {Guskos19951319,
	title = {EPR study of Cu2+ ions in the Pr0.5RE0.5Ba2Cu3O6 + x compounds in tetragonal phase at low temperatures},
	journal = {Journal of Magnetism and Magnetic Materials},
	volume = {140-144},
	number = {PART 2},
	year = {1995},
	note = {cited By 1},
	pages = {1319-1320},
	abstract = {Powdered samples of the Pr0.5RE0.5Ba2Cu3O6 + x compounds, where RE Yb, Ho, Tm, Er, and Y, were investigated by the EPR technique at low temperatures in the range 2.8-20 K. In the EPR spectra of these non-superconducting materials in tetragonal phase, resonance lines arising from the exchange interaction of coupled pairs of divalent copper ions and Cu2+ in the tetragonal local crystal field symmetry were recorded. Apart from the usually observed ΔMs = 1 and ΔMs = 2 transitions for the CuCu system, rarely reported singlet-triplet transitions were detected as well. The exchange parameter J has roughly the same value of about 0.12 cm-1 for all investigated samples and the zero-field splitting parameter D is of the order of 0.013 cm-1. It is suggested that formation of Cu(1)OCu(2) copper coupled pairs is responsible for the observed EPR spectrum. {\textcopyright} 1995.},
	doi = {10.1016/0304-8853(94)01433-7},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-19244379343\&doi=10.1016\%2f0304-8853\%2894\%2901433-7\&partnerID=40\&md5=4c887ec2510cb4313153255113779657},
	author = {Guskos, N. and V. Likodimos and Koufoudakis, A. and Bojanowski, B. and Typek, J. and Wabia, M.}
}
