A NEW COMPOUND IN THE TERNARY SYSTEM, Li2O-TiO2-Nb2O5

نویسندگان

  • S. Shimada
  • C. Kawai
  • K. Kodaira
  • T. Matsushita
چکیده

A new compound was confirmed to be formed at around the composition Li:Ti:Nb=19:10:12 in the system Li 0-Ti0 -Nb O5 by reaction at 1100 OC for 2 120 hrs in air betaeen tf2~63, Ti0 and Nb205. This compound was also produced by reactlon of L~N~o,.o.~T~o, with Li2Ti0 . Single crystals of the compound were grown uslng a Li2Mo04 8y flux method. The crystals were shown to possess a hexagonal symmetry with the lattke parameters of a,=8.89 A and co=55.10 A by a Weissenberg film.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

DIELECTRIC PROPERTIES OF Li1+x-yNb1-x-3yTix+4yO3 M-PHASE SOLID SOLUTIONS

The structure and dielectric properties of the so-called “M-phase” solid solutions in the Li2O-Nb2O5-TiO2 system have been investigated. Detailed studies of the lattice parameters of these phases agree well with structure models based on intergrowths of LiNbO3 slabs with a Ti-rich corundum-type layer. The relative permittivity ranges from ~80 to ~55; microwave quality factors increase with the ...

متن کامل

Crystalline Structure and Dielectric Properties of Li1+x-yNb1-x-3yTix+4yO3 M-Phase Solid Solutions

The structure and dielectric properties of the so-called M-phase solid solutions in the Li2O-Nb2O5-TiO2 system have been investigated. Detailed studies of the lattice parameters of these phases agree well with structure models based on intergrowths of LiNbO3 slabs with a titanium-rich corundum-type layer. The relative permittivity ranges from ~80 to ~55; microwave quality factors increase with ...

متن کامل

In Situ Vibrational Spectroscopy Studies of Supported Niobium Oxide Catalysts

The IR spectra of bulk Nb2O5‚nH2O and niobia supported on SiO2, Al2O3, ZrO2, and TiO2 were recorded in the fundamental and overtone NbdO regions, as well as in the hydroxyl region, to develop a better understanding of the structural models of surface NbOx species. The coincidence of the IR and Raman fundamental NbdO frequency in Nb2O5/Al2O3, Nb2O5/ZrO2, and Nb2O5/TiO2 provides the strongest evi...

متن کامل

Molecular structure–reactivity relationships for the oxidation of sulfur dioxide over supported metal oxide catalysts

The catalytic oxidation of sulfur dioxide to sulfur trioxide over several binary (MxOy/TiO2) and ternary (V2O5/MXOY/TiO2) supported metal oxide catalysts was systematically investigated. The supported metal oxide components were essentially 100% dispersed as surface metal oxide species, as confirmed by Raman spectroscopy characterization. The sulfur dioxide oxidation turnover frequencies of the...

متن کامل

Analysis of phase distributions in the Li2Oâ•fiNb2O5â•fiTiO2 system by piezoresponse imaging

The M-phase solid solutions Li1+x-yNb1-x-3yTix+4yO3) (0.1 ≤ x ≤ 0.3, 0 ≤ y ≤ 0.175) in the Li2O–Nb2O5–TiO2 system have promising microwave dielectric properties. However, these compounds can contain small quantities of ferroelectric impurities that affect the polarization response of the material. Due to their low concentration and their chemical similarity to the host material, the impurities ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2017