Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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Naji, M.
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Rai, R.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (27/27 displayed)

  • 2017Highly elastomeric poly(3-hydroxyoctanoate) based natural polymer composite for enhanced keratinocyte regenerationcitations
  • 2015Influence of BiFeTaO<inf>3</inf> addition on the electrical properties of Na<inf>0.4725</inf>K<inf>0.4725</inf>Li<inf>0.055</inf>NbO<inf>3</inf> ceramics system using impedance spectroscopy26citations
  • 2014Study of electrical and magnetic properties of Ba, la and Pb doped Bi <inf>1-x-y</inf>Dy<inf>x</inf>C<inf>y</inf>Fe<inf>1-y</inf>Ti<inf>y</inf>O <inf>3</inf> perovskite ceramics4citations
  • 2014Study of Ca doping on A- site on the structural and physical properties of BLTMNZ ceramics1citations
  • 2014Dielectric and magnetic studies of (NKNLS)(1-x)-(NZFO)(x) multiferroic composites7citations
  • 2013Synthesis and physical properties of Ca- and Ta-modified (K,Na)NbO <inf>3</inf> lead-free piezoelectric ceramics10citations
  • 2013Influence of Li and la content on phase structures and electrical properties of K<inf>0.5</inf>NaK<inf>0.5</inf>NbO<inf>3</inf> lead-free piezoelectric ceramics14citations
  • 2013Sterilization effects on the physical properties and cytotoxicity of poly(glycerol sebacate)35citations
  • 2013Impedance spectroscopy and piezoresponse force microscopy analysis of lead-free (1 - X) K <inf>0.5</inf>Na <inf>0.5</inf>NbO <inf>3</inf> - XLiNbO <inf>3</inf> ceramics41citations
  • 2013Poly(glycerol sebacate)poly(butylene succinate-dilinoleate) blends as candidate materials for cardiac tissue engineering17citations
  • 2013Enhanced ferroelectric and magnetic properties of perovskite structured Bi<inf>1-x-y</inf>Gd<inf>x</inf>La<inf>y</inf>Fe<inf>1-y</inf>Ti <inf>y</inf>O<inf>3</inf> magnetoelectric ceramics16citations
  • 2013Dielectric behavior and impedance analysis of lead-free CuO doped (Na <inf>0.50</inf>K<inf>0.50</inf>)<inf>0.95</inf>(Li<inf>0.05</inf>Sb <inf>0.05</inf>Nb<inf>0.95</inf>)O<inf>3</inf> ceramics20citations
  • 2013Study of strontium doping on the structural and magnetic properties of YMnO<inf>3</inf>ceramics7citations
  • 2012Local nanoelectromechanical properties of multiferroics Gd-DoPeD BiFeo <inf>3</inf>-BaTio <inf>3</inf> solid solution2citations
  • 2012Structural and impedance spectroscopy analysis of Ba(Fe <inf>0.5</inf> Nb <inf>0.5</inf> )O <inf>3</inf> -BaTiO <inf>3</inf> ceramic system19citations
  • 2012Doping effects of Li-Sb content on the structure and electrical properties of [(Na <inf>0.5</inf>K <inf>0.5</inf>) <inf>1 - X</inf>(Li) <inf>x</inf>(Sb) <inf>x</inf>(Nb) <inf>1 - x</inf>O <inf>3</inf>] lead-free piezoelectric ceramics27citations
  • 2012Complex dielectric function in lead-free NKN films1citations
  • 2012Development of lead-free materials for piezoelectric energy harvesting5citations
  • 2011Structure and magnetic properties of Cd doped copper ferrite15citations
  • 2011Study of structural and ferromagnetic properties of pure and Cd doped copper ferrite20citations
  • 2011Dielectric relaxation and conductivity in lead-free sodium bismuth titanate ceramics2citations
  • 2011Investigation of dielectric and electrical properties of Mn doped sodium potassium niobate ceramic system using impedance spectroscopy41citations
  • 2011Preparation, structures, and multiferroic properties of single-phase BiRFeO<inf>3</inf>, R = la and Er ceramics63citations
  • 2011Influence of GdFeO 3 addition on the physical properties of NaKNbO 3 lead free ferroelectric ceramics5citations
  • 2010Ferroelectric and ferromagnetic properties of Gd-doped BiFeO3-BaTiO3 solid solution61citations
  • 2010Multiferroic properties of BiFeO3 doped Bi(MgTi)O-3-PbTiO3 ceramic system26citations
  • 2009Investigation of structural, electrical and magnetic properties of BiFeO3-Bi(MgTi)O-3-PbTiO3 ceramic system13citations

Places of action

Chart of shared publication
Roy, I.
1 / 10 shared
Roether, Ja
1 / 2 shared
Mohn, D.
1 / 7 shared
Mordan, N.
1 / 1 shared
Mccormick, A.
1 / 1 shared
Keshavarz, T.
1 / 1 shared
Knowles, Jc
1 / 23 shared
Boccaccini, Ar
1 / 302 shared
Gordge, Mp
1 / 1 shared
Stark, Wj
1 / 1 shared
Locke, Ic
1 / 1 shared
Salih, V.
1 / 4 shared
Kumari, P.
2 / 6 shared
Kholkin, Andrei L.
21 / 435 shared
Sharma, S.
14 / 31 shared
Valente, M. A.
6 / 16 shared
Bdikin, I.
7 / 53 shared
Tiwari, A.
1 / 7 shared
Pereira, André
1 / 7 shared
Rani, R.
7 / 7 shared
Monteiro Almeida, Adm
1 / 1 shared
Amorín, H.
1 / 17 shared
Coondoo, I.
5 / 21 shared
Panwar, N.
1 / 15 shared
Detsch, Rainer
1 / 191 shared
Roether, J. A.
2 / 24 shared
Tallawi, M.
2 / 3 shared
Barbani, N.
1 / 5 shared
Kaschta, J.
1 / 12 shared
Boccaccini, A. R.
2 / 193 shared
Rosellini, E.
1 / 2 shared
Schubert, D. W.
2 / 18 shared
Roerick, O.
1 / 1 shared
Weyand, M.
1 / 1 shared
Göken, Mathias
1 / 350 shared
Kozlowska, A.
1 / 2 shared
Fray, M. E.
1 / 1 shared
R-Gleixner, M.
1 / 1 shared
Merle, Benoit
1 / 87 shared
Aifantis, K.
1 / 1 shared
Gracio, J.
1 / 19 shared
Duarte, P.
1 / 2 shared
Marques, P. A.
1 / 1 shared
Kumar, P.
1 / 33 shared
Singh, N. K.
2 / 6 shared
Santos, L.
1 / 14 shared
Schwarz, R.
2 / 15 shared
Mardolcar, U.
1 / 2 shared
Leal, M.
1 / 2 shared
Bhattacharyya, Sr
1 / 5 shared
Ayouchi, R.
2 / 16 shared
Bhattacharaya, S.
1 / 1 shared
Lopes, Rp
1 / 1 shared
Sobolev, N. A.
2 / 16 shared
Nair, S. S.
2 / 5 shared
Verma, K.
2 / 3 shared
Almeida Valente, M.
1 / 1 shared
Kumar, R.
1 / 56 shared
Sharma, D. K.
1 / 4 shared
Mishra, S. K.
1 / 3 shared
Valente, Ma
1 / 2 shared
Kholkin, Al
2 / 69 shared
Singh, Nk
1 / 1 shared
Pandey, S.
1 / 4 shared
Chart of publication period
2017
2015
2014
2013
2012
2011
2010
2009

Co-Authors (by relevance)

  • Roy, I.
  • Roether, Ja
  • Mohn, D.
  • Mordan, N.
  • Mccormick, A.
  • Keshavarz, T.
  • Knowles, Jc
  • Boccaccini, Ar
  • Gordge, Mp
  • Stark, Wj
  • Locke, Ic
  • Salih, V.
  • Kumari, P.
  • Kholkin, Andrei L.
  • Sharma, S.
  • Valente, M. A.
  • Bdikin, I.
  • Tiwari, A.
  • Pereira, André
  • Rani, R.
  • Monteiro Almeida, Adm
  • Amorín, H.
  • Coondoo, I.
  • Panwar, N.
  • Detsch, Rainer
  • Roether, J. A.
  • Tallawi, M.
  • Barbani, N.
  • Kaschta, J.
  • Boccaccini, A. R.
  • Rosellini, E.
  • Schubert, D. W.
  • Roerick, O.
  • Weyand, M.
  • Göken, Mathias
  • Kozlowska, A.
  • Fray, M. E.
  • R-Gleixner, M.
  • Merle, Benoit
  • Aifantis, K.
  • Gracio, J.
  • Duarte, P.
  • Marques, P. A.
  • Kumar, P.
  • Singh, N. K.
  • Santos, L.
  • Schwarz, R.
  • Mardolcar, U.
  • Leal, M.
  • Bhattacharyya, Sr
  • Ayouchi, R.
  • Bhattacharaya, S.
  • Lopes, Rp
  • Sobolev, N. A.
  • Nair, S. S.
  • Verma, K.
  • Almeida Valente, M.
  • Kumar, R.
  • Sharma, D. K.
  • Mishra, S. K.
  • Valente, Ma
  • Kholkin, Al
  • Singh, Nk
  • Pandey, S.
OrganizationsLocationPeople

document

Complex dielectric function in lead-free NKN films

  • Santos, L.
  • Rai, R.
  • Schwarz, R.
  • Mardolcar, U.
  • Leal, M.
  • Bhattacharyya, Sr
  • Ayouchi, R.
  • Coondoo, I.
  • Kholkin, Andrei L.
  • Bdikin, I.
Abstract

We use optical transmission spectroscopy and spectral ellipsometry (SE) to determine the real and imaginary part of the complex dielectric function in both ceramic samples and thin films of lead-free NaxK1-xNbO3 (NKN). Thin films of NKN were prepared by pulsed laser deposition (PLD) from ceramic NKN targets. The optical band gap from transmission measurements in thin films yield an optical band gap of 3.94 or 3.55 eV, depending on whether direct or indirect transitions, respectively, are assumed. The fit procedure of SE results, based on the Tauc-Lorentz model, resulted in a band gap for films of 3.66 eV, whereas the band gap of the thick ceramic samples was 3.79 eV. Examples of amorphous and highly polycrystalline thin films, deposited at 450 and 600 degrees C, respectively, are discussed.

Topics
  • amorphous
  • thin film
  • ellipsometry
  • ceramic
  • pulsed laser deposition
  • spectroscopy