Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles

doi:10.1016/j.matlet.2019.04.013

This content will become publicly available on April 13, 2020

Title: Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles

Full Record
Other Related Research

Abstract

Ferromagnetic gadolinium silicide (Gd ₅Si ₄) nanoparticles significantly enhance the microwave absorption bandwidth of a polymer blend (PVB-PEDOT:PSS). These materials are essentially needed for various military and civilian applications such as X-band (8.2–12.4 GHz) and Ku-band (12.4–18 GHz) absorption. A single 1.2 mm thick layer of PVB-PEDOT:PSS-Gd ₅Si ₄ (PPGS) nanocomposite film demonstrates the most promising bandwidth (8.2–18 GHz) with a minimum reflection loss of -14 dB. Mechanistically, dielectric loss ($$\mathcal {tan}$$δ _e ≈2.4) and magnetic loss ($$\mathcal {tan}$$δ _m ≈1.1) contributes more efficiently, and standard microwave simulation confirms the stored energy is predominant in PPGS nanocomposite which enhances the bandwidth.

Authors:

Bora, Pritom J. ^[1]; Gupta, Shalabh ^[2]; Pecharsky, Vitalij K. ^[3]; Vinoy, K. J. ^[4]; Ramamurthy, Praveen C. ^[5]; Hadimani, Ravi L. ^[6]

Indian Inst. of Technology (IIT), Madras (India). Interdisciplinary Centre for Energy Research (ICER)
Ames Laboratory (AMES), Ames, IA (United States)
Ames Lab. and Iowa State Univ., Ames, IA (United States)
Indian Inst. of Technology (IIT), Madras (India). Dept. of Electrical and Communication Engineering
Indian Inst. of Technology (IIT), Madras (India). Interdisciplinary Centre for Energy Research (ICER); Indian Inst. of Technology (IIT), Madras (India). Dept. of Materials Engineering
Virginia Commonwealth Univ., Richmond, VA (United States); Iowa State Univ., Ames, IA (United States)

Publication Date:: 2019-04-13

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

OSTI Identifier:: 1529366

Report Number(s):: IS-J-9660
Journal ID: ISSN 0167-577X

Grant/Contract Number:: AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: Materials Letters

Additional Journal Information:: Journal Volume: 252; Journal Issue: C; Journal ID: ISSN 0167-577X

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: Polymer nanocomposites; Dielectrics; Reflection loss (RL); RL bandwidth

Citation Formats


                    Bora, Pritom J., Gupta, Shalabh, Pecharsky, Vitalij K., Vinoy, K. J., Ramamurthy, Praveen C., and Hadimani, Ravi L. Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles.  United States: N. p., 2019. 
        Web.  doi:10.1016/j.matlet.2019.04.013.

Copy to clipboard


                    Bora, Pritom J., Gupta, Shalabh, Pecharsky, Vitalij K., Vinoy, K. J., Ramamurthy, Praveen C., & Hadimani, Ravi L. Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles.  United States.  doi:10.1016/j.matlet.2019.04.013.

Copy to clipboard


                    Bora, Pritom J., Gupta, Shalabh, Pecharsky, Vitalij K., Vinoy, K. J., Ramamurthy, Praveen C., and Hadimani, Ravi L. Sat .  
        "Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles".  United States.  doi:10.1016/j.matlet.2019.04.013.

Copy to clipboard


                    
@article{osti_1529366,

  title        = {Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles},

  author       = {Bora, Pritom J. and Gupta, Shalabh and Pecharsky, Vitalij K. and Vinoy, K. J. and Ramamurthy, Praveen C. and Hadimani, Ravi L.},

  abstractNote = {Ferromagnetic gadolinium silicide (Gd5Si4) nanoparticles significantly enhance the microwave absorption bandwidth of a polymer blend (PVB-PEDOT:PSS). These materials are essentially needed for various military and civilian applications such as X-band (8.2–12.4 GHz) and Ku-band (12.4–18 GHz) absorption. A single 1.2 mm thick layer of PVB-PEDOT:PSS-Gd5Si4 (PPGS) nanocomposite film demonstrates the most promising bandwidth (8.2–18 GHz) with a minimum reflection loss of -14 dB. Mechanistically, dielectric loss ($\mathcal {tan}$δe ≈2.4) and magnetic loss ($\mathcal {tan}$δm ≈1.1) contributes more efficiently, and standard microwave simulation confirms the stored energy is predominant in PPGS nanocomposite which enhances the bandwidth.},

  doi          = {10.1016/j.matlet.2019.04.013},

  journal      = {Materials Letters},

  number       = C,

  volume       = 252,

  place        = {United States},

  year         = {2019},

  month        = {4}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

This content will become publicly available on April 13, 2020

Publisher's Version of Record

DOI: 10.1016/j.matlet.2019.04.013

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Gadolinium silicide (Gd ₅Si ₄) nanoparticles for tuneable broad band microwave absorption

Journal Article Bora, Pritom J. ; Harstad, S. M. ; Gupta, S. ; ... - Materials Research Express (Online)

We report that soft magnetic Gd ₅Si ₄ nanoparticles exhibit excellent microwave absorption in the Ku-band (12.4-18 GHz) when dispersed in poly (dimethyl siloxane), PDMS. The minimum experimentally recorded reflection loss (RL) of Gd ₅Si ₄-PDMS nanocomposite is -69 dB, with a large bandwidth for a single 6 mm-thick layer. The bandwidth can be further extended by using a novel design where 1 mm-thick layers of the nanocomposite are arranged into a modified pyramid-shaped absorber. Standard electromagnetic (EM) simulations confirm experimental results.
DOI: 10.1088/2053-1591/aafd55
Using Janus Nanoparticles To Trap Polymer Blend Morphologies during Solvent-Evaporation-Induced Demixing

Journal Article Bryson, Kyle C. ; Lobling, Tina I. ; Muller, Axel H. E. ; ... - Macromolecules

Using ternary blends of polystyrene (PS), poly(methyl methacrylate) (PMMA), and Janus particles (JPs) with symmetric PS and PMMA hemispheres, we demonstrate the stabilization of dispersed and bicontinuous phase-separated morphologies by the interfacial adsorption of Janus particles during demixing upon solvent removal. The resulting blend morphology could be varied by changing the blend composition and JP loading. Increasing particle loading decreased the size of phase-separated domains, while altering the mixing ratio of the PS/PMMA homopolymers produced morphologies ranging from PMMA droplets in a PS matrix to PS droplets in a PMMA matrix. Notably, bicontinuous morphologies were obtained at intermediate blend compositions,more »« less
Cited by 16
DOI: 10.1021/acs.macromol.5b00640

Full Text Available
Investigating phase transition temperatures of size separated gadolinium silicide magnetic nanoparticles

Journal Article Hunagund, Shivakumar G. ; Harstad, Shane M. ; El-Gendy, Ahmed A. ; ... - AIP Advances

Gadolinium silicide (Gd ₅Si ₄) nanoparticles (NPs) exhibit different properties compared to their parent bulk materials due to finite size, shape, and surface effects. NPs were prepared by high energy ball-milling of the as-cast Gd ₅Si ₄ ingot and size separated into eight fractions using time sensitive sedimentation in an applied dc magnetic field with average particle sizes ranging from 700 nm to 82 nm. The largest Gd ₅Si ₄ NPs order ferromagnetically at 316 K. A second anomaly observed at 110 K can be ascribed to a Gd ₅Si ₃ impurity. Here as the particle sizes decrease, the volumemore »« less
DOI: 10.1063/1.5007686

Full Text Available
Enhancement of β-phase in PVDF films embedded with ferromagnetic Gd ₅Si ₄ nanoparticles for piezoelectric energy harvesting

Journal Article Harstad, Shane ; D’Souza, Noel ; Soin, Navneet ; ... - AIP Advances

Self-polarized Gd5Si4-polyvinylidene fluoride (PVDF) nanocomposite films have been synthesized via a facile phase-inversion technique. For the 5 wt% Gd ₅Si ₄-PVDF films, the enhancement of the piezoelectric β-phase and crystallinity are confirmed using Fourier transform infrared (FTIR) spectroscopy (phase fraction, FβFβ, of 81% as compared to 49% for pristine PVDF) and differential scanning calorimetry (crystallinity, ΔXcΔXc, of 58% as compared to 46% for pristine PVDF), respectively. The Gd5Si4 magnetic nanoparticles, prepared using high-energy ball milling were characterized using Dynamic Light Scattering and Vibrating Sample Magnetometry (VSM) to reveal a particle size of ~470 nm with a high magnetization of 11more »« less
Cited by 1
DOI: 10.1063/1.4973596

Full Text Available
Colloidal cobalt-doped ZnO nanoparticles by microwave-assisted synthesis and their utilization in thin composite layers with MEH-PPV as an electroluminescent material for polymer light emitting diodes

Journal Article Skoda, David ; Urbanek, Pavel ; Sevcik, Jakub ; ... - Organic Electronics

In this study, Co _xZn _1-xO (x = 0.01, 0.05 and 0.1) nanoparticles were prepared by microwave-assisted polyol method from zinc acetate dihydrate and Co(II) acetylacetonate. The reactions were performed in diethylene glycol (DEG) at 250 °C with the use of oleic acid as a surfactant. Resulting nanoparticle (ca. 10 nm) precipitates were washed with methanol and dried or kept as colloidal solutions redispersed in toluene. Colloidal solutions were mixed with the Poly [2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) polymer to produce thin nanocomposite layers with specific optoelectronic properties. The electronic structure in terms of density of states (DOS) of MEH-PPV and MEH-PPV/nanocomposite layersmore »« less
Cited by 1
DOI: 10.1016/j.orgel.2018.05.037

Full Text Available

Similar Records