Structural and modulus spectroscopy studies of Bi0.5(Na0.8K0.2)0.5TiO3 nano-polycrystalline ceramic

2021 ◽  
Author(s):  
Ch.K. Varada Rajulu ◽  
S. Ramesh ◽  
T. Anil Babu ◽  
V. Raghavendra ◽  
D. Gangadharudu ◽  
...  
Keyword(s):  
Modulus Spectroscopy ◽  
Polycrystalline Ceramic ◽  
Spectroscopy Studies

IMPEDANCE AND MODULUS SPECTROSCOPY OF (Na1/2Bi1/2)1-xCaxTiO3 CERAMICS

2002 ◽  
Vol 16 (31) ◽  
pp. 4755-4766 ◽  
Author(s):  
B. V. BAHUGUNA SARADHI ◽  
K. SRINIVAS ◽  
T. BHIMASANKARAM
Keyword(s):  
Impedance Spectroscopy ◽  
Bismuth Titanate ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Modulus Spectroscopy ◽  
Testing Tool ◽  
Equivalent Circuit Parameters ◽  
Spectroscopy Studies ◽  
Non Destructive ◽  
Impedance And Modulus Spectroscopy

Impedance spectroscopy studies of calcium doped (Ca=0.01, 0.05, 0.1) sodium bismuth titanate (NBT), that is, ( Na 1/2 Bi 1/2)1-x Ca x TiO 3 (NBCT) solid solution are studied as a function of temperature (RT — 575°C) and frequency (100 Hz–1 MHz). The electrical properties and equivalent circuit parameters of Ca doped NBT, and it's bulk and grain boundary effects are studied with impedance spectroscopy as a non-destructive testing tool.

Dielectric and impedance spectroscopic studies of 0.8BaTiO3–0.2Bi0.5K0.5TiO3 lead-free ceramics

2015 ◽  
Vol 29 (18) ◽  
pp. 1550119 ◽  
Author(s):  
M. N. V. Ramesh ◽  
K. V. Ramesh
Keyword(s):  
Relaxation Process ◽  
Electric Modulus ◽  
High Energy ◽  
Lead Free ◽  
Relaxor Behavior ◽  
Temperature Dependent ◽  
Lead Free Ceramics ◽  
Modulus Spectroscopy ◽  
Electric Modulus Spectroscopy ◽  
Spectroscopy Studies

0.8 BaTiO 3–0.2 Bi 0.5 K 0.5 TiO 3 (BT–BKT20) lead-free ceramics were prepared by conventional solid state reaction method followed by high energy ball milling. The formation of a single phase tetragonal structure in the material was confirmed by X-ray diffraction. Frequency and temperature-dependent dielectric studies show relaxor behavior in the BT–BKT20 which was found to obey modified Curie–Weiss law with degree of diffuseness 1.573. Complex impedance and electric modulus spectroscopy studies reveal temperature-dependent relaxation process in the material. The Cole–Cole plots were measured at high temperatures at which grain effect was observed. Impedance and electric modulus spectroscopy studies show non-Debye kind of conductivity relaxation process in the present material. Activation energies were calculated from impedance and electric modulus spectroscopy and the values of activation energy indicated that the conduction is ionic in nature. AC and DC conductivity have been measured and studied at different temperatures.

Impedance and modulus spectroscopy studies of cobalt substituted strontium hexaferrite ceramics

2017 ◽  
Vol 28 (18) ◽  
pp. 13445-13454 ◽  
Author(s):  
K. Alamelu Mangai ◽  
K. Tamizh Selvi ◽  
M. Priya ◽  
P. Sureshkumar ◽  
M. Rathnakumari
Keyword(s):  
Strontium Hexaferrite ◽  
Modulus Spectroscopy ◽  
Spectroscopy Studies ◽  
Impedance And Modulus Spectroscopy

Impedance and modulus spectroscopy studies on Ba0.1Sr0.81La0.06Bi2Nb2O9 ceramic

2006 ◽  
Vol 133 (1-3) ◽  
pp. 141-150 ◽  
Author(s):  
K. Sambasiva Rao ◽  
D. Madhava Prasad ◽  
P. Murali Krishna ◽  
B. Tilak ◽  
K.Ch. Varadarajulu
Keyword(s):  
Modulus Spectroscopy ◽  
Spectroscopy Studies ◽  
Impedance And Modulus Spectroscopy

In Situ Raman Spectroscopy Studies on La2CaB10O19 Crystal Growth

2020 ◽  
Vol 20 (10) ◽  
pp. 6604-6609
Author(s):  
Shanshan Liu ◽  
Guochun Zhang ◽  
Kai Feng ◽  
Yanyang Han ◽  
Tao He ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Crystal Growth ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Spectroscopy Studies

scholarly journals Dual-mode humidity detection using a lanthanide-based metal–organic framework: towards multifunctional humidity sensors

2017 ◽  
Vol 53 (32) ◽  
pp. 4465-4468 ◽  
Author(s):  
Yuan Gao ◽  
Pengtao Jing ◽  
Ning Yan ◽  
Michiel Hilbers ◽  
Hong Zhang ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Humidity Sensor ◽  
Metal Organic Framework ◽  
Dual Mode ◽  
Humidity Sensors ◽  
Highly Effective ◽  
Metal Organic ◽  
Spectroscopy Studies ◽  
Organic Framework

Combined photoluminescence and impedance spectroscopy studies show that a europium-based metal–organic framework behaves as a highly effective and reliable humidity sensor, enabling dual-mode humidity detection.

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