Electromagnetic shielding, magnetic and microwave absorbing properties of Polypyrrole/Ba0.6Sr0.4Fe12O19 composite synthesized via in-situ polymerization technique

Velhal, Ninad B.; Patil, N. D.; Kulkarni, Gopal; Shinde, Surendra K.; Valekar, Navanath J.; Barshilia, Harish C.; Puri, Vijaya

doi:10.1016/j.jallcom.2018.11.041

Cited by 44 publications

(12 citation statements)

References 48 publications

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“…Consequently, high‐performance EM wave absorbing materials which have drawn increasing attention are now regarded as an effective strategy to eliminate the EM pollution. Carbon‐based composites, 5‐9 metal‐based composites, 10‐14 polymer‐based composites, 15‐19 and ceramic‐based composites, 20‐24 have been extensively studied for EM wave absorption application. However, applications of carbon, metal, and polymer‐based composites are limited at elevated temperatures due to their degraded strength and EM wave absorption under oxidizing and/or corrosive atmosphere 25 .…”

Section: Introductionmentioning

confidence: 99%

Dielectric response and electromagnetic wave absorption of novel macroporous short carbon fibers/mullite composites

Long

Luo

et al. 2020

J Am Ceram Soc

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Nowadays, electromagnetic (EM) interference and radiation pollution generated from widespread application of electronic devices, could damage the normal function of electronic equipment as well as humanity. 1-4 Consequently, high-performance EM wave absorbing materials which have drawn increasing attention are now regarded as an effective strategy to eliminate the EM pollution. Carbon-based composites, 5-9 metal-based composites, 10-14 polymer-based composites, 15-19 and ceramic-based composites, 20-24 have been extensively studied for EM wave absorption application. However, applications of carbon, metal, and polymer-based composites are limited at elevated temperatures due to their degraded strength and EM wave absorption under oxidizing and/or corrosive atmosphere. 25 Therefore, ceramic-based composites with lightweight, excellent high-temperature strength, and outstanding thermal-chemical stability, are regarded as the most promising candidates of EM wave absorbing materials for high-temperature applications.

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Section: Introductionmentioning

confidence: 99%

Dielectric response and electromagnetic wave absorption of novel macroporous short carbon fibers/mullite composites

Long

Luo

et al. 2020

J Am Ceram Soc

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“…The composition formed in the space by the material is P63/mmc. The decrease in the cell volume and the lattice parameters shows the solubility due to smaller ionic radii of Ga 3+ (0.62 Å) and Co 2+ (0.72 Å) in M-Type hexaferrite lattice [15,16]. Also, the X-ray density increased by 0.37 g/ Research Article SN Applied Sciences (2020) 2:2035 | https://doi.org/10.1007/s42452-020-03786-9 cm 3 as it is directly proportional to the molecular weight using Eq.…”

Section: Xrd Analysismentioning

confidence: 96%

“…He had used Mn 2+ & Ti 4+ as the dopant in M-type Sr hexaferrite and found that RL increased up to −14.68 dB at 12 GHz [7]. Afghahi et al X & Ku band by synthesization of Ba-Sr hexaferrite via insitu polymerization method [15]. Veisi [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of suitable material for microwave absorbing properties in X-band

et al. 2020

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Synthesization of M-type hexaferrite with composition Ba 0.5 Sr 0.5 Co x Ga x Fe 12-2x O 19 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) has been performed at temperature 1100 °C for 15 h by adopting conventional ceramic method. For analyzing the structure of synthesized material, the X-ray diffraction (XRD) method has been used. Besides that its properties are observed by using different characterization techniques like VSM (vibrating sample magnetometer), Fourier Transform Infrared (FTIR) spectra and VNA (Vector network analyzer), SEM (scanning Electron Microscopy), Energy-dispersive X-ray spectroscopy (EDAX). Microwave absorption property has been investigated using quarter wavelength and impedance matching mechanism in the X-Band range (8.2-12.4 GHz). From the results obtained, it was being observed that microwave absorption was best at doping concentration x = 0.4 i.e. −33.36 dB reflection loss at thickness 2.0 mm and frequency 9.62 GHz. The synthesized samples can be used for different possible applications in X-Band as narrowband & broadband absorbers and EMI shielding devices. The main applications are Electromagnetic Compatibility, microwave filters, network switches, Radar cross-section reduction (RCS) in the military, electronic enclosures and antenna applications.

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“…The most important characteristics of conducting polymers, to make it suitable candidate for electronic devices, are low cost [120], flexible [121], solution processable [122][123][124][125][126] and foremost non toxic [127][128][129]. Therefore as far as device applications are concerned, the conducting polymers (CPs) have tremendous role in different fields including sensors [130][131][132][133], solar cells [134,135], batteries [136], organic light emitting diodes (OLED) [69,137,138], electromagnetic shielding [139,140] and thermoelectric power generators [141][142][143][144]. Normally like molecular semiconductors the application of CPs, in various electronic devices, is determined by their electrical properties and in this connection, tailoring of electrical conductivity is the most targeted feature.…”

Section: Conducting Polymersmentioning

confidence: 99%

Electron Beam Induced Tailoring of Electrical Characteristics of Organic Semiconductor Films

et al. 2020

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Tailoring the characteristics of organic semiconductors including molecular semiconductor and conducting polymers is the frontline area of research for improving the performance of organic electronic devices. Electron beam treatment has been established as one of the easiest method in comparison to others like chemical doping, thermal processing, ozonolysis, UV and other ionizing radiation treatment, to tune the physico-chemical properties of organic semiconductors. High energy electron beam (EB) generated from an accelerators impinges energy to the material and causes several phenomena including doping, crosslinking, chain degradation, gas evolution, molecular structural modifications, oxidation and unsaturation. Such modifications lead to variation in electrical characteristics and consequently affect the overall device performances. In the present review we have focused on the different interaction processes of EB with organic semiconductors and its implications to tailor the performance of device comprising of it mainly gas sensors, field effect transistors, thermoelectric power generators and radiation dosimeters.

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Electromagnetic shielding, magnetic and microwave absorbing properties of Polypyrrole/Ba0.6Sr0.4Fe12O19 composite synthesized via in-situ polymerization technique

Cited by 44 publications

References 48 publications

Dielectric response and electromagnetic wave absorption of novel macroporous short carbon fibers/mullite composites

Dielectric response and electromagnetic wave absorption of novel macroporous short carbon fibers/mullite composites

Synthesis of suitable material for microwave absorbing properties in X-band

Electron Beam Induced Tailoring of Electrical Characteristics of Organic Semiconductor Films

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