H. Ullmann
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- Magnetic and transport properties of perovskites and related materials 19
- Materials Chemistry top 5%
- Advancements in Solid Oxide Fuel Cells 23
- Electronic and Structural Properties of Oxides 13
- Thermal Expansion and Ionic Conductivity 5
- Catalytic Processes in Materials Science 3
- Ferroelectric and Piezoelectric Materials 3
- Catalysis top 10%
- Condensed Matter Physics top 10%
- Bioengineering top 10%
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- Microwave Dielectric Ceramics Synthesis 5
- Fuel Cells and Related Materials 3
H. Ullmann
34 papers receiving 1.5k citations
Hit Papers
Peers
Comparison fields: 5 of 36
- Electronic, Optical and Magnetic Materials 906
- Materials Chemistry 1.4k
- Catalysis 135
- Condensed Matter Physics 120
- 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-authorship network
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
| # | Work | ||
|---|---|---|---|
| 1 | 2025 | 0 | |
| 2 | 2024 | 0 | |
| 3 | 2008 | 1 | |
| 4 | 2006 | 11 | |
| 5 | 2006 | 17 | |
| 6 | 2006 | 51 | |
| 7 | 2006 | 4 | |
| 8 | 2005 | 1 | |
| 9 | 2003 | 51 | |
| 10 | 2002 | 7 | |
| 11 | 2001 | 60 | |
| 12 | 2000 | 43 | |
| 13 | 1999 | 61 | |
| 14 | 1997 | 48 | |
| 15 | 1997 | 26 | |
| 16 | 1994 | 1 | |
| 17 | 1990 | 7 | |
| 18 | 1983 | 53 | |
| 19 | 1967 | 4 | |
| 20 | 1967 | 3 |
About H. Ullmann
H. Ullmann is a scholar working on Electronic, Optical and Magnetic Materials, Materials Chemistry, Filtration and Separation, Catalysis and Electrical and Electronic Engineering, having authored 36 papers that have together received 1.5k indexed citations. Recurring topics across this work include Advancements in Solid Oxide Fuel Cells (23 papers), Magnetic and transport properties of perovskites and related materials (19 papers), Electronic and Structural Properties of Oxides (13 papers), Microwave Dielectric Ceramics Synthesis (5 papers), Thermal Expansion and Ionic Conductivity (5 papers), Catalytic Processes in Materials Science (3 papers), Ferroelectric and Piezoelectric Materials (3 papers) and Fuel Cells and Related Materials (3 papers). The work is most often cited by research in Electronic, Optical and Magnetic Materials (906 citations), Materials Chemistry (1.4k citations), Catalysis (135 citations), Condensed Matter Physics (120 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, Frank Tietz, A. Ahmad-Khanlou, V. Vashook, U. Guth, H. Altenburg, L. Vasylechko, J. Zösel and Jens Paulsen. 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 Sensors and Actuators B Chemical.
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.