Health & Environmental Research Online (HERO)


Print Feedback Export to File
329536 
Journal Article 
Investigation of the dielectric properties of MnO-additive Pb(Fe[sup]2/3[/sup]W[sup]1/3[/sup])-PbTiO[sup]3[/sup] relaxors prepared by two different methods 
Hong, CS; Chu, SY; Su, WC; Chang, RC; Nien, HH; Juang, YD 
2008 
Yes 
Journal of Alloys and Compounds
ISSN: 0925-8388 
460 
1-2 
658-667 
In this paper, 0.75Pb(Fe2/3Wi/3)03-0.25PbTi03-0.15 wt% MnO (0.75PFW-0.25PT-0.15 wt% MnO) ceramics are synthesized by two different methods, the conventional direct oxide synthesized (DS) method and two-step indirect synthesized (IS) method. The low-field dielectric responses are investigated by using the empirical law, the Curie-Weiss law, the modified-Landau theory and the spin-glass model. Due to the IS method, the lattice structure and the grain structure of the samples are changed. Furthermore, the dielectric properties are evidently modified. It is suggested that the ordering degree of B-site cations is enhanced by using the IS synthesized method. (English) 
Dielectric properties; PFW; Relaxors; Synthesized method; Mn; Dopants; Ferroelectric; Relaxeur; Titanate de plomb; Diffraction RX; Synthèse; Fer Plomb Tungstate Mixte; Microscopie électronique balayage; Perte diélectrique; Constante diélectrique; Relation ordre; Verre spin; Théorie Landau; Loi Curie Weiss; Champ faible; Propriété diélectrique; Relaxor; Lead titanates; XRD; Synthesis; Iron Lead Tungstates Mixed; Scanning electron microscopy; Dielectric losses; Permittivity; Ordering; Spin glasses; Landau theory; Curie-Weiss law; Low field; Mixto; Relación orden; Campo débil