dc electrical resistivity
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Optik ◽  
2021 ◽  
Vol 247 ◽  
pp. 167913
Author(s):  
Smita More ◽  
Mangesh V. Khedkar ◽  
Govind D. Kulkarni ◽  
Pravin Kadhane ◽  
Rahul Kamble ◽  
...  

2021 ◽  
Vol 127 (8) ◽  
Author(s):  
K. Chandramouli ◽  
Vemuri Raghavendra ◽  
P. V. S. K. Phanidhar Varma ◽  
B. Suryanarayana ◽  
Tulu Wegayehu Mammo ◽  
...  

Author(s):  
K. Chandramouli ◽  
P. Anantha Rao ◽  
B. Suryanarayana ◽  
Vemuri Raghavendra ◽  
Shaik Jesus Mercy ◽  
...  

2021 ◽  
Vol 127 (5) ◽  
Author(s):  
P. Himakar ◽  
K. Jayadev ◽  
D. Parajuli ◽  
N. Murali ◽  
Paulos Taddesse ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1399
Author(s):  
W. Aslam Farooq ◽  
Muhammad Sajjad Ul Hasan ◽  
Muhammad Iftikhar Khan ◽  
Ahmad Raza Ashraf ◽  
Muhammad Abdul Qayyum ◽  
...  

A series of cobalt-inserted copper zinc ferrites, Cu0.6CoxZn0.4−xFe2O4 (x = 0.0, 0.1, 0.2, 0.3, 0.4) having cubic spinel structure were prepared by the coprecipitation method. Various characterization techniques, including XRD, FTIR, UV-vis and I–V were used to investigate structural optical and electrical properties, respectively. The lattice constant was observed to be decreased as smaller ionic radii Co2+ (0.74 Å) replaced the higher ionic radii Zn2+ (0.82 Å). The presence of tetrahedral and octahedral bands was confirmed by FTIR spectra. Optical bandgap energy was determined in the range of 4.44–2.05 eV for x = 0.0 to 0.4 nanoferrites, respectively. DC electrical resistivity was measured and showed an increasing trend (5.42 × 108 to 6.48 × 108 Ω·cm) with the addition of cobalt contents as cobalt is more conductive than zinc. The range of DC electrical resistivity (108 ohm-cm) makes these nanomaterials potential candidates for telecommunication devices.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Aamir Ghafoor ◽  
Ismat Bibi ◽  
Sadia Ata ◽  
Farzana Majid ◽  
Shagufta Kamal ◽  
...  

Abstract A series of Bi and Fe doped La1−x Bi x Cr1−y Fe y O3 (x = 0.00–0.10 and y = 0.02–0.12) perovskites were fabricated through a facile microemulsion method and were characterized by XRD, DC electrical-resistivity, dielectric, VSM, and UV–Visible measurements. Orthorhombic phase of synthesized substituted chromite nanocrystallite was confirmed by powdered XRD analysis with crystallite size in 47.8–32.9 nm range. DC electrical resistivity was observed to increase from 1.70–39.99 × 108 Ω-cm. Dielectric parameters analyzed in frequency range of 20 kHz–20 MHz were decreased, while magnetic parameters were observed to increase with the increase in dopant (Bi+3 and Fe+3) concentration. Whereas coercivity values was low (narrow hysteresis loop), which indicate the soft ferromagnetic of the prepared material materials which are quite useful to employ in storage devices and electronics. Moreover, La1−x Bi x Cr1−y Fe y O3 degraded 90.80% Rhodamine B dye under visible light irradiation within 55 min. The increase in electrical resistivity, while decrease in dielectric parameters was also observed with increase in dopant concentration, ferromagnetic nature and excellent photocatalytic properties make this material suitable for high frequency energy devices, microwave appliances as well as an excellent magnetically separable photocatalyst for the purification of contaminated wastewater.


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