%0 Journal Article
%T Crystal-field investigations and magnetic properties of Nd3+-doped Bi4Si3O12
%+ Groupe d'étude des semiconducteurs (GES)
%A Isber, S.
%A Tabbal, M.
%A Christidis, T.
%A Charar, Salam
%A Terki, Ferial
%A Ishii, M.
%< avec comité de lecture
%Z GES:05-089
%@ 1098-0121
%J Physical Review B: Condensed Matter and Materials Physics (1998-2015)
%I American Physical Society
%V 71
%P 014405
%8 2005
%D 2005
%R 10.1103/PhysRevB.71.014405
%K BI4GE3O12 SINGLE-CRYSTALS
%K SEMICONDUCTORS
%K IONS
%K STEPS
%K SUSCEPTIBILITY
%K ZN1-XMNXSE
%K EMISSION
%K ALLOYS
%K GROWTH
%K ER3+
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X The magnetic properties of bismuth silicate (BSO) doped with Nd3+, Bi4(1-x)Nd4xSi3O12 (x=0.5%, 1.5%, 2.5%, 3.5%, and 5%) were investigated. X-band electron paramagnetic resonance measurements show that the site symmetry of Nd3+ at 4.2 K is trigonal and the Lande factors were determined to be g(parallel to)=1.15+/-0.01 and g(perpendicular to)=2.47+/-0.02. The exchange coupling between nearest-neighbor (NN) Nd3+ ions was estimated from magnetization measurements, using a model that takes into account the magnetic contributions of single ions and pairs. The exchange interaction between Nd3+ nearest neighbors is antiferromagnetic with an estimated value of J(p)/k(B)=-5.2+/-0.4 K. The energy levels splitting of Nd3+ were obtained from optical absorption spectra measurements at 300, 77, and 5 K.
%G English
%L hal-00549878
%U https://hal.science/hal-00549878
%~ CNRS
%~ UNIV-MONTP2
%~ GES
%~ UNIV-MONTPELLIER
%~ UM1-UM2