Microwave dielectric properties of ceramics based on CaTiO3–LnMO3 System (Ln–La, Nd; M–Al, Ga)

Autor:	L.P. Mudroliubova, E.A. Nenasheva, N.F. Kartenko
Rok vydání:	2003
Předmět:	Permittivity Materials science Aluminate Analytical chemistry Mineralogy Dielectric chemistry.chemical_compound Tetragonal crystal system Calcium titanate chemistry Lanthanum oxide Materials Chemistry Ceramics and Composites Temperature coefficient Solid solution
Zdroj:	Journal of the European Ceramic Society. 23:2443-2448
ISSN:	0955-2219
DOI:	10.1016/s0955-2219(03)00188-2
Popis:	Structural features and microwave dielectric properties of LnMO3–CaTiO3 samples (where Ln stands for La or Nd, M stands for Al or Ga) are studied. Solid solutions with the rhombic perovskite structure are shown to be formed with increasing molar concentration of LnMO3 up to ∼35% (for Ln–Nd, M–Al) or ∼40% (for Ln–La, M–Ga). Further increase of the neodymium aluminate or lanthanum gallate molar content in the solid solution up to 70% leads to formation of solid solutions with the tetragonal perovskite structure. A family of promising ceramics for application in the microwave technology with dielectric permittivity lying within the range from 43 to 48, the dielectric permittivity temperature coefficient being near to zero, and heightened quality factor (Q·f ⩾40,000 GHz) are obtained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b2482686a2449142d29c103499e31603 https://doi.org/10.1016/s0955-2219(03)00188-2 Zobrazit plný text záznamu Full Text from ScienceDirect