Investigation of relaxation phenomenon in lanthanum orthoferrite extracted through complex impedance and electric modulus spectroscopy

2020 ◽  
Vol 128 (6) ◽  
pp. 064101
Author(s):  
Samiya Manzoor ◽  
Shahid Husain ◽  
Anand Somvanshi ◽  
Mehroosh Fatema
Keyword(s):  
Electric Modulus ◽  
Complex Impedance ◽  
Relaxation Phenomenon ◽  
Modulus Spectroscopy ◽  
Electric Modulus Spectroscopy

Impedance Elements of Significant Junctions in InGaN Light-Emitting Diodes Studied by Electric Modulus Spectroscopy

2019 ◽  
Vol 66 (8) ◽  
pp. 3393-3398 ◽  
Author(s):  
Forest Shih-Sen Chien ◽  
Riza Ariyani Nur Khasanah ◽  
Pei-Te Lin ◽  
Yen-Fu Lin ◽  
Yuen-Wuu Suen
Keyword(s):  
Light Emitting Diodes ◽  
Electric Modulus ◽  
Light Emitting ◽  
Modulus Spectroscopy ◽  
Electric Modulus Spectroscopy

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.

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