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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Tuomisto, Filip

  • Google
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University of Helsinki

in Cooperation with on an Cooperation-Score of 37%

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Publications (44/44 displayed)

  • 2024Suppression of helium migration in arc-melted and 3D-printed CoCrFeMnNi high entropy alloy1citations
  • 2024Suppression of helium migration in arc-melted and 3D-printed CoCrFeMnNi high entropy alloy1citations
  • 2024Solubility of Hydrogen in a WMoTaNbV High-Entropy Alloy2citations
  • 2023Hydrogen isotope exchange experiments in high entropy alloy WMoTaNbV4citations
  • 2022Irradiation Damage Independent Deuterium Retention in WMoTaNbV2citations
  • 2021Properties of HPT-Processed Large Bulks of p-Type Skutterudite DD0.7Fe3CoSb12 with ZT > 1.310citations
  • 2021Identification of Point Defects in Multielement Compounds and Alloys with Positron Annihilation Spectroscopy11citations
  • 2020Segregation of Ni at early stages of radiation damage in NiCoFeCr solid solution alloys49citations
  • 2020Ti-Sr antisite12citations
  • 2020Ti-Sr antisite : An abundant point defect in SrTiO312citations
  • 2019Ga vacancies and electrical compensation in beta-Ga2O3 thin films studied with positron annihilation spectroscopy14citations
  • 2019Ga vacancies and electrical compensation in β-Ga 2 O 3 thin films studied with positron annihilation spectroscopy14citations
  • 2018Effects of alloy composition and Si-doping on vacancy defect formation in (InxGa1-x)2O3 thin films14citations
  • 2018Hydrogen-induced strain localisation in oxygen-free copper in the initial stage of plastic deformation8citations
  • 2017Detector resolution in positron annihilation Doppler broadening experiments2citations
  • 2017Positron annihilation analysis of the atomic scale changes in oxidized Zircaloy-4 samples13citations
  • 2017Effects of grain size and deformation temperature on hydrogen-enhanced vacancy formation in Ni alloys86citations
  • 2016Review-Defect Identification with Positron Annihilation Spectroscopy in Narrow Band Gap Semiconductors8citations
  • 2016Electrical compensation via vacancy-donor complexes in arsenic-implanted and laser-annealed germanium13citations
  • 2015Increased p-type conductivity in GaNxSb1-x, experimental and theoretical aspects9citations
  • 2015Annealing effect on donor-acceptor interface and its impact on the performance of organic photovoltaic devices based on PSiF-DBT copolymer and C-6013citations
  • 2015Role of excessive vacancies in transgranular stress corrosion cracking of pure copper4citations
  • 2015Advanced techniques for characterization of ion beam modified materials51citations
  • 2014Substitutionality of nitrogen atoms and formation of nitrogen complexes and point defects in GaPN alloys12citations
  • 2014Effect of growth temperature on the epitaxial growth of ZnO on GaN by ALD20citations
  • 2013Origin of band gap bowing in dilute GaAs1-xNx and GaP1-xNx alloys21citations
  • 2012Matter-positronium interaction7citations
  • 2012Low energy electron beam induced vacancy activation in GaN56citations
  • 2012Tailoring the Chain Packing in Ultrathin Polyelectrolyte Films Formed by Sequential Adsorption23citations
  • 2012Point defect evolution in low-temperature MOCVD growth of InN6citations
  • 2012Interplay of native point defects with ZnO Schottky barriers and doping25citations
  • 2011Self-compensation in semiconductors182citations
  • 2010Papers presented at the 2009 E-MRS Fall Meeting, Symposium Hcitations
  • 2010Effect of hydrogen on plastic strain localization in single crystals of austenitic stainless steel52citations
  • 2010Vacancy defects in bulk ammonothermal GaN crystals43citations
  • 2009Effect of Hydrogen on Plastic Strain Localization in Single Crystals of Nickel and Austenitic Stainless Steelcitations
  • 2009Native vacancy defects in Zn1-x(Mn,Co)(x)GeAs2 studied with positron annihilation spectroscopy12citations
  • 2009Effect of growth conditions on vacancy defects in MOVPE grown AlN thin layers5citations
  • 2008Evidence of PPII-like helical conformation and glass transition in a self-assembled solid-state polypeptide-surfactant complex13citations
  • 2007Hierarchical porosity in self-assemhled polymers107citations
  • 2007Interplay of Ga vacancies, C impurities and yellow luminescence in GaN13citations
  • 2007Hierarchical porosity in self-assemhled polymers:Post-modification of block copolymer-phenolic resin complexes hy pyrolysis allows the control of micro- and mesoporosity107citations
  • 2007Defect distribution in a-plane GaN on Al2O335citations
  • 2006Effect of the misorientation of the 4H-SiC substrate on the open volume defects in GaN grown by metal-organic chemical vapor deposition5citations

Places of action

Chart of shared publication
Laukkanen, Anssi
2 / 144 shared
Lu, Eryang
3 / 5 shared
Pasanen, Antti
2 / 11 shared
Mizohata, Kenichiro
5 / 99 shared
Vaajoki, Antti
2 / 16 shared
Lagerbom, Juha
2 / 66 shared
Suhonen, Tomi
2 / 50 shared
An, Xudong
2 / 2 shared
Chen, Zhehao
2 / 2 shared
Anna, Liski
1 / 1 shared
Liski, Anna
4 / 4 shared
Byggmästar, Jesper
1 / 16 shared
Djurabekova, Flyura Gatifovna
2 / 37 shared
Nordlund, Kai
2 / 54 shared
Tseng, Ko-Kai
3 / 3 shared
Vuoriheimo, Tomi
3 / 4 shared
Heinola, Kalle
3 / 8 shared
Tsai, Che-Wei
3 / 3 shared
Yeh, Jien-Wei
3 / 4 shared
Ahlgren, Tommy Juha
3 / 3 shared
Shen, Ting-En
1 / 1 shared
Jalkanen, Pasi
2 / 13 shared
Zayachuk, Yevhen
2 / 2 shared
Heino, Jouni
1 / 3 shared
Likonen, Jari
1 / 19 shared
Widdowson, Anna
1 / 2 shared
Mallik, Ramesh Chandra
1 / 6 shared
Renk, Oliver
1 / 15 shared
Schafler, Erhard
1 / 15 shared
Ghosh, Sanyukta
1 / 5 shared
Rogl, Peter Franz
1 / 2 shared
Bursik, Jiri
1 / 2 shared
Bauer, Ernst
1 / 9 shared
Grytsiv, Andriy
1 / 1 shared
Makkonen, Ilja
9 / 16 shared
Zhang, Yanwen
2 / 22 shared
Heikinheimo, Janne
1 / 6 shared
Granberg, Fredric
1 / 15 shared
Weber, W. J.
1 / 11 shared
Velisa, G.
1 / 7 shared
Bei, H.
1 / 14 shared
Xue, H.
1 / 2 shared
Karjalainen, Antti
4 / 6 shared
Prozheeva, Vera
4 / 5 shared
Bickermann, Matthias
2 / 6 shared
Guguschev, Christo
2 / 3 shared
Markurt, Toni
2 / 5 shared
Wagner, Gunter
2 / 2 shared
Baldini, Michele
2 / 2 shared
Wenckstern, H. Von
1 / 3 shared
Hoelldobler, R.
1 / 1 shared
Prozheeva, V.
1 / 2 shared
Grundmann, M.
1 / 21 shared
Haenninen, Hannu
1 / 1 shared
Yagodzinskyy, Yuriy
3 / 15 shared
Malitckii, Evgenii
1 / 10 shared
Ala-Heikkila, J.
1 / 1 shared
Heikinheimo, J.
2 / 3 shared
Kujala, J.
4 / 5 shared
Ortner, S.
1 / 5 shared
Blackmur, M.
1 / 1 shared
Lawrence, Samantha K.
1 / 3 shared
Harris, Zachary D.
1 / 1 shared
Somerday, Brian P.
1 / 1 shared
Korhonen, Esa
1 / 1 shared
Hanninen, Hannu
2 / 4 shared
Slotte, Jonatan
2 / 8 shared
Napolitani, Enrico
1 / 11 shared
Kalliovaara, T.
1 / 1 shared
Slotte, J.
1 / 2 shared
Milazzo, Ruggero
1 / 2 shared
Impellizzeri, G.
1 / 8 shared
Fortunato, G.
1 / 10 shared
Veal, T. D.
1 / 23 shared
Ashwin, M. J.
1 / 5 shared
Segercrantz, N.
1 / 7 shared
Matos, Carolina F.
1 / 1 shared
Yamamoto, Natasha A. D.
1 / 1 shared
Marchiori, Cleber F. N.
1 / 1 shared
Macedo, Andreia G.
1 / 1 shared
Roman, Lucimara S.
1 / 1 shared
Zarbin, Aldo J. G.
1 / 8 shared
Koehler, Marlus
1 / 1 shared
Kujala, Jiri
1 / 3 shared
Kilpelainen, Simo
1 / 1 shared
Aaltonen, Pertti
1 / 20 shared
Saukkonen, Tapio
1 / 25 shared
Kluth, Patrick
1 / 7 shared
Debelle, Aurelien
1 / 3 shared
Boulle, Alexandre
1 / 50 shared
Nagarajan, S.
1 / 6 shared
Lemettinen, J.
1 / 3 shared
Lipsanen, H.
1 / 7 shared
Jussila, H.
1 / 4 shared
Huhtio, T.
1 / 1 shared
Sopanen, M.
2 / 6 shared
Tuomi, T. O.
1 / 7 shared
Yu, K. M.
1 / 5 shared
Sarkijarvi, Suvi
1 / 1 shared
Bosund, Markus
1 / 8 shared
Suihkonen, Sami
1 / 25 shared
Lipsanen, Harri
1 / 65 shared
Sintonen, Sakari
1 / 15 shared
Puska, Martti J.
1 / 3 shared
Virkkala, Ville
1 / 2 shared
Havu, Ville
1 / 2 shared
Puska, M. J.
1 / 2 shared
Zubiaga, A.
3 / 4 shared
Kilanski, L.
2 / 2 shared
Suihkonen, S.
1 / 4 shared
Nykanen, H.
1 / 1 shared
Yap, Heng Pho
1 / 1 shared
Quinn, John F.
1 / 3 shared
Pas, Steven J.
1 / 2 shared
Caruso, Frank
1 / 16 shared
Quinn, Anthony
1 / 2 shared
Hill, Anita J.
1 / 11 shared
Shekibi, Bijan S.
1 / 1 shared
Mardel, James I.
1 / 1 shared
Suzuki, Ryoichi
1 / 1 shared
Heuken, Michael
1 / 9 shared
Giesen, Christoph
1 / 1 shared
Tuna, Oecal
1 / 1 shared
Rauch, Christian
1 / 1 shared
Song, Jin Joo
1 / 1 shared
Zhang, Jizhi
1 / 1 shared
Look, David C.
1 / 2 shared
Dong, Yufeng
1 / 1 shared
Kuznetsov, Andrei Yu.
1 / 1 shared
Doutt, Daniel
1 / 1 shared
Fang, Z.-Q.
1 / 1 shared
Brillson, Leonard J.
1 / 3 shared
Cantwell, Gene
1 / 1 shared
Svensson, Bengt G.
1 / 1 shared
Mosbacker, H. Lee
1 / 1 shared
Brillson, L. J.
1 / 1 shared
Svensson, B. G.
1 / 8 shared
Doutt, D. R.
1 / 1 shared
Look, D. C.
1 / 3 shared
Leedy, K. D.
1 / 1 shared
Vines, L.
1 / 5 shared
Saukkonen, T.
2 / 5 shared
Yagodzinskyy, Y.
2 / 9 shared
Kilpelainen, S.
1 / 1 shared
Hänninen, H.
2 / 22 shared
Zajac, M.
1 / 13 shared
Maki, J. -M.
2 / 2 shared
Barannikova, S.
1 / 1 shared
Zuev, L.
1 / 1 shared
Domukhovski, V.
1 / 4 shared
Varnavskiy, S. A.
1 / 1 shared
Dobrowolski, W.
1 / 4 shared
Marenkin, S. F.
1 / 3 shared
Bastek, B.
1 / 1 shared
Bertam, F.
1 / 1 shared
Christen, J.
1 / 3 shared
Dadgar, A.
1 / 1 shared
Krost, A.
1 / 2 shared
Kilpeläinen, Simo
1 / 3 shared
Tuma, Roman
1 / 2 shared
Laiho, Ari
1 / 7 shared
Ramani, Ramasubbu
3 / 3 shared
Ikkala, Olli
3 / 33 shared
Ruokolainen, Janne
3 / 23 shared
Hanski, Sirkku
1 / 1 shared
Kosonen, Harri
2 / 2 shared
Nykanen, Antti
2 / 2 shared
Valkama, Sami
2 / 2 shared
Brinke, Gerrit Ten
1 / 21 shared
Engelhardt, Peter
2 / 2 shared
Reurings, F.
1 / 1 shared
Ten Brinke, Gerrit
1 / 23 shared
Nykänen, Antti
1 / 4 shared
Monemar, B.
1 / 4 shared
Hommel, D.
1 / 16 shared
Figge, S.
1 / 8 shared
Kersting, R.
1 / 3 shared
Paskova, T.
1 / 17 shared
Kroeger, R.
1 / 3 shared
Hageman, P. R.
1 / 3 shared
Nordlund, A.
1 / 1 shared
Larsen, P. K.
1 / 3 shared
Rudzinski, M.
1 / 3 shared
Saarinen, K.
1 / 1 shared
Tengborn, E.
1 / 1 shared
Rummukainen, M.
1 / 1 shared
Chart of publication period
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006

Co-Authors (by relevance)

  • Laukkanen, Anssi
  • Lu, Eryang
  • Pasanen, Antti
  • Mizohata, Kenichiro
  • Vaajoki, Antti
  • Lagerbom, Juha
  • Suhonen, Tomi
  • An, Xudong
  • Chen, Zhehao
  • Anna, Liski
  • Liski, Anna
  • Byggmästar, Jesper
  • Djurabekova, Flyura Gatifovna
  • Nordlund, Kai
  • Tseng, Ko-Kai
  • Vuoriheimo, Tomi
  • Heinola, Kalle
  • Tsai, Che-Wei
  • Yeh, Jien-Wei
  • Ahlgren, Tommy Juha
  • Shen, Ting-En
  • Jalkanen, Pasi
  • Zayachuk, Yevhen
  • Heino, Jouni
  • Likonen, Jari
  • Widdowson, Anna
  • Mallik, Ramesh Chandra
  • Renk, Oliver
  • Schafler, Erhard
  • Ghosh, Sanyukta
  • Rogl, Peter Franz
  • Bursik, Jiri
  • Bauer, Ernst
  • Grytsiv, Andriy
  • Makkonen, Ilja
  • Zhang, Yanwen
  • Heikinheimo, Janne
  • Granberg, Fredric
  • Weber, W. J.
  • Velisa, G.
  • Bei, H.
  • Xue, H.
  • Karjalainen, Antti
  • Prozheeva, Vera
  • Bickermann, Matthias
  • Guguschev, Christo
  • Markurt, Toni
  • Wagner, Gunter
  • Baldini, Michele
  • Wenckstern, H. Von
  • Hoelldobler, R.
  • Prozheeva, V.
  • Grundmann, M.
  • Haenninen, Hannu
  • Yagodzinskyy, Yuriy
  • Malitckii, Evgenii
  • Ala-Heikkila, J.
  • Heikinheimo, J.
  • Kujala, J.
  • Ortner, S.
  • Blackmur, M.
  • Lawrence, Samantha K.
  • Harris, Zachary D.
  • Somerday, Brian P.
  • Korhonen, Esa
  • Hanninen, Hannu
  • Slotte, Jonatan
  • Napolitani, Enrico
  • Kalliovaara, T.
  • Slotte, J.
  • Milazzo, Ruggero
  • Impellizzeri, G.
  • Fortunato, G.
  • Veal, T. D.
  • Ashwin, M. J.
  • Segercrantz, N.
  • Matos, Carolina F.
  • Yamamoto, Natasha A. D.
  • Marchiori, Cleber F. N.
  • Macedo, Andreia G.
  • Roman, Lucimara S.
  • Zarbin, Aldo J. G.
  • Koehler, Marlus
  • Kujala, Jiri
  • Kilpelainen, Simo
  • Aaltonen, Pertti
  • Saukkonen, Tapio
  • Kluth, Patrick
  • Debelle, Aurelien
  • Boulle, Alexandre
  • Nagarajan, S.
  • Lemettinen, J.
  • Lipsanen, H.
  • Jussila, H.
  • Huhtio, T.
  • Sopanen, M.
  • Tuomi, T. O.
  • Yu, K. M.
  • Sarkijarvi, Suvi
  • Bosund, Markus
  • Suihkonen, Sami
  • Lipsanen, Harri
  • Sintonen, Sakari
  • Puska, Martti J.
  • Virkkala, Ville
  • Havu, Ville
  • Puska, M. J.
  • Zubiaga, A.
  • Kilanski, L.
  • Suihkonen, S.
  • Nykanen, H.
  • Yap, Heng Pho
  • Quinn, John F.
  • Pas, Steven J.
  • Caruso, Frank
  • Quinn, Anthony
  • Hill, Anita J.
  • Shekibi, Bijan S.
  • Mardel, James I.
  • Suzuki, Ryoichi
  • Heuken, Michael
  • Giesen, Christoph
  • Tuna, Oecal
  • Rauch, Christian
  • Song, Jin Joo
  • Zhang, Jizhi
  • Look, David C.
  • Dong, Yufeng
  • Kuznetsov, Andrei Yu.
  • Doutt, Daniel
  • Fang, Z.-Q.
  • Brillson, Leonard J.
  • Cantwell, Gene
  • Svensson, Bengt G.
  • Mosbacker, H. Lee
  • Brillson, L. J.
  • Svensson, B. G.
  • Doutt, D. R.
  • Look, D. C.
  • Leedy, K. D.
  • Vines, L.
  • Saukkonen, T.
  • Yagodzinskyy, Y.
  • Kilpelainen, S.
  • Hänninen, H.
  • Zajac, M.
  • Maki, J. -M.
  • Barannikova, S.
  • Zuev, L.
  • Domukhovski, V.
  • Varnavskiy, S. A.
  • Dobrowolski, W.
  • Marenkin, S. F.
  • Bastek, B.
  • Bertam, F.
  • Christen, J.
  • Dadgar, A.
  • Krost, A.
  • Kilpeläinen, Simo
  • Tuma, Roman
  • Laiho, Ari
  • Ramani, Ramasubbu
  • Ikkala, Olli
  • Ruokolainen, Janne
  • Hanski, Sirkku
  • Kosonen, Harri
  • Nykanen, Antti
  • Valkama, Sami
  • Brinke, Gerrit Ten
  • Engelhardt, Peter
  • Reurings, F.
  • Ten Brinke, Gerrit
  • Nykänen, Antti
  • Monemar, B.
  • Hommel, D.
  • Figge, S.
  • Kersting, R.
  • Paskova, T.
  • Kroeger, R.
  • Hageman, P. R.
  • Nordlund, A.
  • Larsen, P. K.
  • Rudzinski, M.
  • Saarinen, K.
  • Tengborn, E.
  • Rummukainen, M.
OrganizationsLocationPeople

article

Substitutionality of nitrogen atoms and formation of nitrogen complexes and point defects in GaPN alloys

  • Kujala, J.
  • Nagarajan, S.
  • Lemettinen, J.
  • Lipsanen, H.
  • Jussila, H.
  • Huhtio, T.
  • Tuomisto, Filip
  • Sopanen, M.
  • Tuomi, T. O.
  • Yu, K. M.
Abstract

Nitrogen substitution and formation of point defects in GaP(1-x)Nx layers (x ranging from 0.01 to 0.04) grown on GaP substrates are characterized by channelling Rutherford backscattering, nuclear reaction analysis and positron annihilation spectroscopy measurements. It is observed that the substitutionality of nitrogen into GaP decreases from a value of 0.91 to that of

Topics
  • impedance spectroscopy
  • Nitrogen
  • positron annihilation lifetime spectroscopy
  • point defect