Title :
BNT ceramics in paraelectric phase: dielectric properties
Author :
Ioachim, A. ; Toacsan, M.I. ; Banciu, M.G. ; Nedelcu, L. ; Plapcianu, C. ; Alexandru, H. ; Berbecaru, C. ; Stoica, G.
Author_Institution :
Nat. Inst. for Mater. Phys., Bucuresti-Magurele, Romania
fDate :
28 Sept.-2 Oct. 2003
Abstract :
The paper describes the investigations of Nd doped barium titanate (BNT) ferroelectric ceramic materials prepared by solid state reaction techniques. The decrease of the Curie temperature with the increase of the Nd2O3 concentration from 0 to 28 wt % was observed. High density values of BNT ceramics were obtained by adding 0.5 mol % PbO substitutional for BaO. The samples were sintered at temperatures Ts=1200+1260°C. At room temperature, the materials are in paraelectric phase, suitable for high frequency applications.
Keywords :
barium compounds; ferroelectric Curie temperature; ferroelectric ceramics; lead compounds; materials preparation; neodymium compounds; permittivity; 1200 to 1260 C; BNT ceramics; Ba1-xPbxNd2Ti5O14; Curie temperature; Nd2O3 concentration; dielectric properties; ferroelectric ceramic materials; high frequency applications; paraelectric phase; Barium; Ceramics; Dielectric constant; Dielectric losses; Dielectric materials; Dielectric measurements; Ferroelectric materials; Frequency; Neodymium; Temperature;
Conference_Titel :
Semiconductor Conference, 2003. CAS 2003. International
Print_ISBN :
0-7803-7821-0
DOI :
10.1109/SMICND.2003.1252443
