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您的检索式：作者名="I.Ardelean"
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| 1 | EPR and Magnetic Susceptibility Investigations of Fe Containing TeO_2-B_2O_3-SrF_2 Glasses显示文摘Iron ions were used as probes to explore the structural and magnetic properties of 70TeO2’25B2O3’ 5SrF2 vitreous matrix. The distribution of Fe3+ ions on different structural aggregates was revealed by means of EPR, as depending on Fe2O3 concentration. Strongly distorted octahedral sites were detected for the isolated paramagnetic ions, and also clusters of Fe ions especially at high Fe2O3 content of samples. Magnetic susceptibility measurements evidenced both dipoledipole and superexchange type interactions involving iron ions. Mixed valence states of iron ions were also | I.Ardelean, M.Peteanut, V.Simon and F.Ciorcas (Faculty of Physics, Babes-Bolyai University, 3400 Cluj-Napoca, Romania) | 2000 | Journal of Materials Science & Technology2000，16，6： | 0 |
| 2 | EPR and Magnetic Susceptibility Investigation of Fe Ions in B_2O_3-SrF_2 Glass Matrix显示文摘The structural and magnetic properties of an oxide-fluoride mixed vitreous matrix 2B2O3-SrF2, were explored by using Fe impurities as probes. Information about the structural units involving iron ions, their valence state, the strengths and type of interactions involving them was obtained using EPR spectroscopy and magnetic susceptibility measurements. | I.Ardelean G.Salvan 等 | 2002 | Journal of Materials Science & Technology2002，18，3： | 0 |
| 3 | Structural and Magnetic Properties of MnO-P_2O_5-PbO Glasses显示文摘The xMnO(100-x)[2P2O5.PbO] glasses were prepared with MnO concentration being in the range of 0≤x≤50 mole fraction and were investigated by EPR spectroscopy and magneticsusceptibility measurements. Octahedral symmetric sites tetragonally distorted were detected for x≤5 mole fraction MnO. Only Mn2+ ions were identified in these glasses, involved in dipoledipole | I.Ardelean M.Peteanu O.Cozar V.Simon V.Mih and G.Botezan (Faculty of Physics, Babes-Bolyai University, 3400 Cluj-Napoca, Romania To whom correspondence should be addressedE-mail: arde@phys.ubbcluj.ro ) | 1999 | Journal of Materials Science & Technology1999，15，5： | 0 |
| 4 | EPR of Irradiation Induced Centers in Some VitreousMatrices Containing Copper显示文摘Boro-germanate glasses containing copper, i.e., xCuO(1-x)[GeO2·B2O3] subjected to gamma irradiation, were studied by means of EPR. Comparisons were made with the xCuO·(1-x)[Na2B4O7] system. Irradiation induced centers were detected. These are: electron trapped at a hydrogen compensated germanium ion centers; boron oxygen hole centers and electron trapped at an oxygen vacancy centers. Strong dependence of the paramagnetic irradiation-induced centers concentration on the CuO content of the sample was evidenced. | M.Peteanu L.Cociu and I.Ardelean (Faculty of Physics, Babes-Bolyai University, 3400 Cluj-Napoca, Romania) | 1995 | Journal of Materials Science & Technology1995，11，4： | 0 |
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