@article {Guskos1993229,
	title = {Experimental studies of the EuBa2-xEuxCu 3O7- delta compound in the tetragonal phase},
	journal = {Journal of Physics: Condensed Matter},
	volume = {5},
	number = {2},
	year = {1993},
	note = {cited By 3},
	pages = {229-234},
	abstract = {EPR and magnetic measurements were carried out on specially prepared samples of the EuBa2-xEuxCu3O 7- delta compound in the tetragonal phase, in the temperature range 100-4.2 K. The EPR spectra of Eu2+, Cu2+, coupled pairs of divalent copper ions and the superexchange interaction between Cu ions over oxygen bridges have been observed. The EPR spectrum of europium ions indicates the existence of a crystal-field splitting of the 8S7/2 ground state of Eu2+ ions with a value of the spin-Hamiltonian parameter b20 of about 14*10-2 cm -1. This parameter is analysed within the framework of Newman{\textquoteright}s superposition model. Anomalies in the temperature variation of the magnetic susceptibility are attributed to the presence of divalent and trivalent europium ions. The susceptibility of Eu3+ ions is non-zero because the excited states are thermally populated and they contribute to the result of the ground state with J=0.},
	doi = {10.1088/0953-8984/5/2/010},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0004403634\&doi=10.1088\%2f0953-8984\%2f5\%2f2\%2f010\&partnerID=40\&md5=815fcf2a6bbe23b1b38573723e6e7fff},
	author = {Guskos, N. and V. Likodimos and Londos, C.A. and Gamari-Seale, H. and Koufoudakis, A. and Mitros, C. and Niarchos, D.}
}
