H. Ullmann

36 papers and 1.6k indexed citations i.

About

H. Ullmann is a scholar working on Materials Chemistry, Electronic, Optical and Magnetic Materials and Electrical and Electronic Engineering. According to data from OpenAlex, H. Ullmann has authored 36 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Materials Chemistry, 21 papers in Electronic, Optical and Magnetic Materials and 11 papers in Electrical and Electronic Engineering. Recurrent topics in H. Ullmann’s work include Advancements in Solid Oxide Fuel Cells (24 papers), Magnetic and transport properties of perovskites and related materials (20 papers) and Electronic and Structural Properties of Oxides (13 papers). H. Ullmann is often cited by papers focused on Advancements in Solid Oxide Fuel Cells (24 papers), Magnetic and transport properties of perovskites and related materials (20 papers) and Electronic and Structural Properties of Oxides (13 papers). H. Ullmann collaborates with scholars based in Germany, Ukraine and Belarus. H. Ullmann's 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 and has published in prestigious journals such as Journal of Materials Science, Sensors and Actuators B Chemical and Solid State Ionics.

In The Last Decade

Co-authorship network of co-authors of H. Ullmann i

Fields of papers citing papers by H. Ullmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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.

Countries citing papers authored by H. Ullmann

Since Specialization
Citations

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).

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.

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