A new form of MgTa2O6 obtained by the molten salt method

A K  Ganguli; S  Nangia; M  Thirumal; P L  Gai

A new form of MgTa2O6 obtained by the molten salt method

A K Ganguli, S Nangia, M Thirumal, P L Gai

Research output: Contribution to journal › Article › peer-review

Abstract

Using molten salt route (with NaCl/KCl as the salt) we have been able to synthesize a new form of magnesium tantalate at 850 degrees C. Powder X-ray diffraction data could be indexed on an orthorhombic unit cell with lattice parameters, 'a' = 15-36(1) angstrom, 'b' = 13-38(1) angstrom and 'c' = 12.10(1) angstrom. High resolution transmission electron microscopy and electron diffraction studies confirm the results obtained by X-ray studies. Energy dispersive X-ray spectroscopy helps ascertain the composition of MgTa2O6. The title compound shows a dielectric constant of similar to 24 with a low dielectric loss of 0.006 at 100 kHz at room temperature. Dielectric constant is nearly unchanged with rise in temperature while the loss shows a very marginal increase (0.007 at 300 degrees C).

Original language	English
Pages (from-to)	37-42
Number of pages	6
Journal	PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-CHEMICAL SCIENCES
Volume	118
Issue number	1
Publication status	Published - Jan 2006

Keywords

MgTa2O6
molten salt method
high resolution transmission electron microscopy
dielectric properties
LOW DIELECTRIC LOSS
MICROWAVE-FREQUENCIES
CERAMICS
OXIDES

Cite this

@article{57a88c81e0e042f18733029805fbe047,

title = "A new form of MgTa2O6 obtained by the molten salt method",

abstract = "Using molten salt route (with NaCl/KCl as the salt) we have been able to synthesize a new form of magnesium tantalate at 850 degrees C. Powder X-ray diffraction data could be indexed on an orthorhombic unit cell with lattice parameters, 'a' = 15-36(1) angstrom, 'b' = 13-38(1) angstrom and 'c' = 12.10(1) angstrom. High resolution transmission electron microscopy and electron diffraction studies confirm the results obtained by X-ray studies. Energy dispersive X-ray spectroscopy helps ascertain the composition of MgTa2O6. The title compound shows a dielectric constant of similar to 24 with a low dielectric loss of 0.006 at 100 kHz at room temperature. Dielectric constant is nearly unchanged with rise in temperature while the loss shows a very marginal increase (0.007 at 300 degrees C).",

keywords = "MgTa2O6, molten salt method, high resolution transmission electron microscopy, dielectric properties, LOW DIELECTRIC LOSS, MICROWAVE-FREQUENCIES, CERAMICS, OXIDES",

author = "Ganguli, {A K} and S Nangia and M Thirumal and Gai, {P L}",

year = "2006",

month = jan,

language = "English",

volume = "118",

pages = "37--42",

journal = "PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-CHEMICAL SCIENCES",

issn = "0253-4134",

publisher = "Indian Academy of Sciences",

number = "1",

}

TY - JOUR

T1 - A new form of MgTa2O6 obtained by the molten salt method

AU - Ganguli, A K

AU - Nangia, S

AU - Thirumal, M

AU - Gai, P L

PY - 2006/1

Y1 - 2006/1

N2 - Using molten salt route (with NaCl/KCl as the salt) we have been able to synthesize a new form of magnesium tantalate at 850 degrees C. Powder X-ray diffraction data could be indexed on an orthorhombic unit cell with lattice parameters, 'a' = 15-36(1) angstrom, 'b' = 13-38(1) angstrom and 'c' = 12.10(1) angstrom. High resolution transmission electron microscopy and electron diffraction studies confirm the results obtained by X-ray studies. Energy dispersive X-ray spectroscopy helps ascertain the composition of MgTa2O6. The title compound shows a dielectric constant of similar to 24 with a low dielectric loss of 0.006 at 100 kHz at room temperature. Dielectric constant is nearly unchanged with rise in temperature while the loss shows a very marginal increase (0.007 at 300 degrees C).

AB - Using molten salt route (with NaCl/KCl as the salt) we have been able to synthesize a new form of magnesium tantalate at 850 degrees C. Powder X-ray diffraction data could be indexed on an orthorhombic unit cell with lattice parameters, 'a' = 15-36(1) angstrom, 'b' = 13-38(1) angstrom and 'c' = 12.10(1) angstrom. High resolution transmission electron microscopy and electron diffraction studies confirm the results obtained by X-ray studies. Energy dispersive X-ray spectroscopy helps ascertain the composition of MgTa2O6. The title compound shows a dielectric constant of similar to 24 with a low dielectric loss of 0.006 at 100 kHz at room temperature. Dielectric constant is nearly unchanged with rise in temperature while the loss shows a very marginal increase (0.007 at 300 degrees C).

KW - MgTa2O6

KW - molten salt method

KW - high resolution transmission electron microscopy

KW - dielectric properties

KW - LOW DIELECTRIC LOSS

KW - MICROWAVE-FREQUENCIES

KW - CERAMICS

KW - OXIDES

M3 - Article

SN - 0253-4134

VL - 118

SP - 37

EP - 42

JO - PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-CHEMICAL SCIENCES

JF - PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-CHEMICAL SCIENCES

IS - 1

ER -