scholarly journals Study of barium titanate/nickel-zinc ferrite based composites: Electrical and magnetic properties and humidity sensitivity

2020 ◽  
Vol 14 (1) ◽  
pp. 9-18
Author(s):  
Mirjana Vijatovic-Petrovic ◽  
Adis Dzunuzovic ◽  
Jelena Bobic ◽  
Nikola Ilic ◽  
Ivan Stijepovic ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Zinc Ferrite ◽  
Hysteresis Loops ◽  
Weight Fraction ◽  
Impedance Analysis ◽  
Ferroelectric Material ◽  
Ferrite Phase ◽  
Total Conductivity ◽  
Nickel Zinc ◽  
Electrical And Magnetic Properties

Composites based on barium titanate and nickel zinc ferrite doped with cooper and samarium were prepared by a mixing method. The formation of barium titanate tetragonal crystal structure and nickel zinc ferrite cubic spinel structure was identified. Polygonal grains were formed in all three types of ceramics. Due to the very high conductivity of ferrite phase in the materials the ferroelectric hysteresis loops were roundish and not typical for classical ferroelectric material. The break down field was found to be similar for all compositions. Leakage current measurements have shown the existence of different types of conductivity mechanisms in each material. The impedance analysis suggested a bit stronger impact of grain boundaries on total conductivity of the composites and the mechanism of polaronic conduction of two types. The magnetization of the composites is lower than for the pure ferrite phase and corresponds to the weight fraction of the ferrite phase. The soft magnetic nature of these composites might be very useful for development of multifunctional devices which will be able to switch the magnetization with small external magnetic field. Humidity sensing properties of the prepared ceramics were also investigated.

scholarly journals Isochronal recovery behaviour on electromagnetic properties of polycrystalline nickel zinc ferrite (Ni0.5Zn0.5Fe2O4) prepared via mechanical alloying

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nor Hapishah Abdullah ◽  
Muhammad Syazwan Mustaffa ◽  
Mohd Nizar Hamidon ◽  
Farah Nabilah Shafie ◽  
Ismayadi Ismail ◽  
...  
Keyword(s):  
Zinc Ferrite ◽  
Property Values ◽  
Electromagnetic Properties ◽  
Complex Permeability ◽  
Polycrystalline Nickel ◽  
New Approach ◽  
Nickel Zinc ◽  
Electrical And Magnetic Properties ◽  
Measured Property ◽  
Hysteresis Behaviour

AbstractA new approach through heat treatment has been attempted by establishing defects by the process of quenching towards electrical and magnetic properties in the nickel zinc ferrite (Ni0.5Zn0.5Fe2O4) sample. The measured property values in permeability and hysteresis characteristic gave their recovery behaviour in which the values, after quenching were recovered after undergoing the annealing. Interestingly, a different trend observed in the permittivity value whereas the value was increased after quenching and subsequently recovered after annealing. The mechanisms which produced the changes is believed to be involved by defects in the form of vacancies, interstitials, microcracks and dislocations created during quenching which gave rise to changes in the values of the complex permeability and permittivity components and hysteresis behaviour.

Effect of antisite formation on magnetic properties of nickel zinc ferrite particles

2013 ◽  
Vol 114 (18) ◽  
pp. 183903 ◽  
Author(s):  
B. Ghosh ◽  
M. Sardar ◽  
S. Banerjee
Keyword(s):  
Magnetic Properties ◽  
Zinc Ferrite ◽  
Nickel Zinc

Head-Wear Measurements by Autoradiography of the Worn Magnetic Tapes

1986 ◽  
Vol 108 (1) ◽  
pp. 22-28 ◽  
Author(s):  
B. Bhushan ◽  
G. W. Nelson ◽  
M. E. Wacks
Keyword(s):  
Magnetic Tape ◽  
Wear Debris ◽  
Zinc Ferrite ◽  
Tape Drive ◽  
Average Amount ◽  
Nickel Zinc ◽  
Total Head ◽  
Drive Component

The transfer of wear debris of a nickel-zinc ferrite head to a magnetic tape was measured by autoradiography of the tape after it was worn against the irradiated ferrite head. Ferrite deposits on the tape were observed only after 5000 passes. Dots or specks on the autoradiograph of the tapes of about 200 micrometers in diameter, caused by particles of ferrite about 1 μm in diameter and mass of about 10−11 g, were measured. The average amount of ferrite deposited on the tape after 20,000 passes was about 0.6 nanogram per square centimeter; some areas showed uniform deposits of ferrite concentration of 10–20 ng/cm2. Based on our estimates of total head wear, only a small fraction (about 0.6 percent) of the total ferrite wear debris was transferred to the tape, about 0.2 percent was transferred to the tape-drive component surfaces, and the rest, we conclude, was airborne.

scholarly journals Induced size effect on Ni doped Nickel Zinc Ferrite Nanoparticles

2010 ◽  
Vol 9 ◽  
pp. 20-23 ◽  
Author(s):  
Ashok Kumar ◽  
Annveer ◽  
Manju Arora ◽  
M.S. Yadav ◽  
R.P. Panta
Keyword(s):  
Size Effect ◽  
Zinc Ferrite ◽  
Ferrite Nanoparticles ◽  
Nickel Zinc

Exchange bias effect in nickel zinc ferrite–mesoporous silica nanocomposites

2013 ◽  
Vol 332 ◽  
pp. 98-102 ◽  
Author(s):  
Shilpi Banerjee ◽  
Partha Hajra ◽  
Mykanth Reddy Mada ◽  
Asim Bhaumik ◽  
Sri Bandyopadhyay ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Exchange Bias ◽  
Zinc Ferrite ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
Silica Nanocomposites ◽  
Nickel Zinc

Large magnetodielectric effect in nickel zinc ferrite–lithium niobate nanocomposite

2012 ◽  
Vol 541 ◽  
pp. 96-100 ◽  
Author(s):  
Shilpi Banerjee ◽  
Partha Hajra ◽  
Asim Bhaumik ◽  
Sri Bandyopadhyay ◽  
Dipankar Chakravorty
Keyword(s):  
Lithium Niobate ◽  
Zinc Ferrite ◽  
Nickel Zinc ◽  
Magnetodielectric Effect
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