H. Ullmann
Impact in
-
- Magnetic and transport properties of perovskites and related materials
- Materials Chemistry top 5%
- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Thermal Expansion and Ionic Conductivity
- Ferroelectric and Piezoelectric Materials
Papers in
-
- Magnetic and transport properties of perovskites and related materials 20
-
- Advancements in Solid Oxide Fuel Cells 24
- Electronic and Structural Properties of Oxides 14
- Thermal Expansion and Ionic Conductivity 5
- Catalytic Processes in Materials Science 3
- Co-authors
- Nikolai Trofimenko (7 shared papers)D. Stöver (2 shared papers)Ariane Ahmad-Khanlou (1 shared paper)Frank Tietz (1 shared paper)Vladimir V. Vashook (18 shared papers)U. Guth (9 shared papers)Horst Altenburg (2 shared papers)Leonid O. Vasylechko (7 shared papers)
In The Last Decade
H. Ullmann
37 papers receiving 1.5k citations
H. Ullmann's Hit Papers
Peers
Comparison fields: 5 of 39
- Electronic, Optical and Magnetic Materials 929
- Materials Chemistry 1.5k
- Catalysis 145
- Condensed Matter Physics 121
- Bioengineering 36
Countries citing papers authored by H. Ullmann
This map shows the geographic impact of H. Ullmann's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by H. Ullmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Ullmann more than expected).
Fields of papers citing papers by H. Ullmann
This network shows the impact of papers produced by H. Ullmann. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by H. Ullmann. The network helps show where H. Ullmann may publish in the future.
Co-authors
The 25 scholars most cited alongside H. Ullmann, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 40 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Correlation between thermal expansion and oxide ion transport in mixed conducting perovskite-type oxides for SOFC cathodes Hit paper breakdown → | 2000 | 568 |
| 2 | 1999 | 106 | |
| 3 | 1998 | 91 | |
| 4 | 2000 | 67 | |
| 5 | 1999 | 63 | |
| 6 | 2001 | 62 | |
| 7 | 2003 | 57 | |
| 8 | 1983 | 53 | |
| 9 | 2006 | 52 | |
| 10 | 1997 | 48 | |
| 11 | 2008 | 47 | |
| 12 | 2003 | 45 | |
| 13 | 1997 | 45 | |
| 14 | 2000 | 43 | |
| 15 | 1999 | 36 | |
| 16 | 2001 | 32 | |
| 17 | 2004 | 32 | |
| 18 | 1997 | 27 | |
| 19 | 2006 | 17 | |
| 20 | 2006 | 11 |
About H. Ullmann
H. Ullmann is a scholar working on Electronic, Optical and Magnetic Materials, Materials Chemistry, Electrical and Electronic Engineering, Catalysis and Condensed Matter Physics, having authored 40 papers that have together received 1.6k indexed citations. Recurring topics across this work include Advancements in Solid Oxide Fuel Cells (24 papers), Magnetic and transport properties of perovskites and related materials (20 papers), Electronic and Structural Properties of Oxides (14 papers), Thermal Expansion and Ionic Conductivity (5 papers), Microwave Dielectric Ceramics Synthesis (5 papers), Fuel Cells and Related Materials (3 papers), Catalytic Processes in Materials Science (3 papers) and Catalysis and Oxidation Reactions (3 papers). The work is most often cited by research in Electronic, Optical and Magnetic Materials (929 citations), Materials Chemistry (1.5k citations), Catalysis (145 citations), Condensed Matter Physics (121 citations) and Bioengineering (36 citations). H. Ullmann has collaborated with scholars based in Germany, Ukraine and Belarus. Frequent co-authors include Nikolai Trofimenko, D. Stöver, Ariane Ahmad-Khanlou, Frank Tietz, Vladimir V. Vashook, U. Guth, Horst Altenburg, Leonid O. Vasylechko, J. Zösel and Michael Knapp. Their work appears in journals such as Solid State Ionics, Journal of Alloys and Compounds, Journal of Solid State Chemistry, Journal of the European Ceramic Society and Fuel Cells.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.