Zobrazeno 1 - 10
of 32
pro vyhledávání: '"V. Ioncu"'
Publikováno v:
Modern Physics Letters B. 18:241-246
Glasses from x MnO ·(100-x) Bi 2 O 3 and x MnO ·(100-x)[ Bi 2 O 3· MO ] ( MO ⇒ GeO 2 and As 2 O 3 systems, with 0≤x≤50 mol %) were prepared in the same conditions and investigated by Raman spectroscopy. The study is particularly focused on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cddca09de90664c2f1912179f4bf7a61
https://doi.org/10.1142/s0217984904006810
https://doi.org/10.1142/s0217984904006810
Publikováno v:
International Journal of Modern Physics B. 17:2633-2641
The structural and magnetic properties of a mixed oxide-fluoride vitreous matrix 3B 2 O 3· CaF 2 containing iron ions were investigated. Information concerning the structural units involving iron ions, their valence states and the type of interactio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18857c9bc4ed40e1b5463cabd6ccbc69
https://doi.org/10.1142/s0217979203018430
https://doi.org/10.1142/s0217979203018430
Publikováno v:
Modern Physics Letters B. 17:355-359
Glasses from x MnO · (100-x) Bi2O3 and x MnO · (100-x)[ Bi2O3 · As2O3 ] systems, with 0≤ x≤ 50 mol% were obtained in the same conditions and characterized by IR spectroscopy. The influence of a gradual increase of MnO content on the glass stru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb7d1415057e85eacf22b5db5337d014
https://doi.org/10.1142/s0217984903005287
https://doi.org/10.1142/s0217984903005287
Publikováno v:
Modern Physics Letters B. 15:1445-1453
Magnetic susceptibility and electric resistivity measurements have been performed on x Fe 2 O 3 · (100-x)[3 B 2 O 3· CaO ] glasses with 0 5 mol% the iron ions participate in the negative superexchange interaction. From Curie constant values we have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13fd76d110d8febe31e7a474aa11af6b
https://doi.org/10.1142/s0217984901003378
https://doi.org/10.1142/s0217984901003378
Publikováno v:
Applied Physics A. 73:481-484
The xCuO(100-x)[70TeO2·25B2O3·5SrF2] vitreous system was studied in the 0.3≤x≤20 mol %CuO concentration range, by means of electron paramagnetic resonance (EPR) and magnetic susceptibility measurements. At low concentrations the Cu2+ ions are i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc5543bd57353d1e6b194cad4625558a
https://doi.org/10.1007/s003390100795
https://doi.org/10.1007/s003390100795
Publikováno v:
Modern Physics Letters B. 15:941-947
The chromium ion distribution in x Cr 2 O 3 · (100 - x)[ 70TeO 2 · 25B 2 O 3 · 5SrF 2] glasses with 0 < x ≤ 20 mol% was revealed by EPR and magnetic susceptibility measurements. Cr 3+ ions were detected as the only valence state. Isolated Cr 3+
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e97afcbb0783102959a974be9c1895c0
https://doi.org/10.1142/s0217984901002968
https://doi.org/10.1142/s0217984901002968
Publikováno v:
International Journal of Modern Physics B. 15:2359-2368
Magnetic susceptibility and electric resistivity measurements have been performed on x MnO ·(100-x)[2 B 2 O 3· PbO ] glasses with 030 mol% the manganese ions experience negative magnetic superexchange interactions. From Curie constant values we hav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::045a4b1e7db60af1fa7e1237c95db2de
https://doi.org/10.1142/s0217979201006653
https://doi.org/10.1142/s0217979201006653
Publikováno v:
Modern Physics Letters B. 14:785-790
Glasses of the system x Fe2O3·(1-x)[Bi2O3·P b O· As 2O3] in the composition range 0.5≤x≤30 mol% were investigated when prepared at 1000°C and 1250°C, respectively. The study was performed by means of EPR of Fe3+ ions. The effects of melting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e114879109aff30665a4caa46c443015
https://doi.org/10.1142/s0217984900001026
https://doi.org/10.1142/s0217984900001026
Publikováno v:
Modern Physics Letters B. 14:653-661
The local structure of Fe2O3–TeO2–B2O3–SrF2 glasses was studied by recording the EPR and IR absorption spectra. Structural changes and increasing glass stability were evidenced with the addition of Fe2O3 in the sample. The distribution of isola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::652128382e28b22b3ac5f22a487335db
https://doi.org/10.1142/s0217984900000847
https://doi.org/10.1142/s0217984900000847
Publikováno v:
Modern Physics Letters B. 11:593-597
The high-T c ( Eu 1-x Ga x) Ba 2 Cu 3 O 7-δ superconductors with x=0, 0.01, 0.02, 0.03, 0.06 and 0.09 were synthesized by a ceramic technique. The gallium concentration dependence of the lattice parameters was determined. A transition from orthorhom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc978905fb46b4d6cb9ddb1806f42b87
https://doi.org/10.1142/s0217984997000736
https://doi.org/10.1142/s0217984997000736