K. Ullakko

10.4k total citations · 2 hit papers
178 papers, 8.7k citations indexed

About

K. Ullakko is a scholar working on Materials Chemistry, Electronic, Optical and Magnetic Materials and Mechanical Engineering. According to data from OpenAlex, K. Ullakko has authored 178 papers receiving a total of 8.7k indexed citations (citations by other indexed papers that have themselves been cited), including 149 papers in Materials Chemistry, 101 papers in Electronic, Optical and Magnetic Materials and 71 papers in Mechanical Engineering. Recurrent topics in K. Ullakko's work include Shape Memory Alloy Transformations (134 papers), Magnetic Properties and Applications (63 papers) and Magnetic and transport properties of perovskites and related materials (44 papers). K. Ullakko is often cited by papers focused on Shape Memory Alloy Transformations (134 papers), Magnetic Properties and Applications (63 papers) and Magnetic and transport properties of perovskites and related materials (44 papers). K. Ullakko collaborates with scholars based in Finland, Ukraine and United States. K. Ullakko's co-authors include A. Sozinov, Junjie Huang, V. V. Kokorin, A. A. Likhachev, N. Lanska, R. C. O’Handley, Oleg Heczko, V. K. Lindroos, Andrey Saren and Outi Söderberg and has published in prestigious journals such as Physical review. B, Condensed matter, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

K. Ullakko

168 papers receiving 8.2k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Large magnetic-field-induced strains in Ni2MnGa single crystals

1996 2.3k citations K. Ullakko et al. profile →
Giant magnetic-field-induced strain in NiMnGa seven-layered martensitic phase

2002 1.4k citations A. Sozinov, K. Ullakko et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
K. Ullakko Finland	37	8.0k	5.7k	1.9k	490	302	178	8.7k
V. A. Chernenko Spain	46	7.2k 0.9×	5.3k 0.9×	1.7k 0.9×	560 1.1×	169 0.6×	261	7.6k
Oleg Heczko Czechia	42	5.4k 0.7×	4.3k 0.7×	1.3k 0.7×	193 0.4×	316 1.0×	224	5.9k
A. Sozinov Finland	31	5.1k 0.6×	3.4k 0.6×	1.3k 0.7×	262 0.5×	248 0.8×	106	5.3k
Katsunari Oikawa Japan	48	8.0k 1.0×	6.3k 1.1×	3.7k 2.0×	677 1.4×	40 0.1×	207	10.2k
Peter Müllner United States	35	3.4k 0.4×	2.0k 0.3×	1.5k 0.8×	99 0.2×	169 0.6×	148	4.0k
Claude Esling France	45	5.7k 0.7×	2.6k 0.5×	4.0k 2.1×	165 0.3×	42 0.1×	345	7.1k
Huibin Xu China	42	4.4k 0.5×	2.4k 0.4×	2.1k 1.1×	208 0.4×	16 0.1×	196	5.9k
J. Pons Spain	40	4.6k 0.6×	2.2k 0.4×	1.6k 0.8×	381 0.8×	43 0.1×	139	4.8k
Daoyong Cong China	33	3.2k 0.4×	2.2k 0.4×	1.2k 0.7×	168 0.3×	26 0.1×	116	3.5k
Chengbao Jiang China	42	5.1k 0.6×	4.1k 0.7×	1.3k 0.7×	221 0.5×	15 0.0×	205	7.5k

Countries citing papers authored by K. Ullakko

Since Specialization

Citations

This map shows the geographic impact of K. Ullakko'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 K. Ullakko with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites K. Ullakko more than expected).

Fields of papers citing papers by K. Ullakko

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K. Ullakko. 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 K. Ullakko. The network helps show where K. Ullakko may publish in the future.

Co-authorship network of co-authors of K. Ullakko

This figure shows the co-authorship network connecting the top 25 collaborators of K. Ullakko. A scholar is included among the top collaborators of K. Ullakko based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with K. Ullakko. K. Ullakko is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ullakko, K., et al.. (2025). Study of the wall thickness effect on the solidification and mechanical properties of thin-walled SS316L built via LPBF additive manufacturing. CIRP journal of manufacturing science and technology. 61. 542–553. 1 indexed citations

Ullakko, K., et al.. (2025). Characterization of structural and magnetic phase transformations in Ni-Mn-Ga magnetic shape memory alloys built via laser powder bed fusion. IOP Conference Series Materials Science and Engineering. 1332(1). 12005–12005. 1 indexed citations

Ullakko, K., et al.. (2025). Influence of laser powder bed fusion scanning strategies on microstructure, transformation, and magnetic behavior of Ni-Mn-Ga magnetic shape memory alloys. Journal of Alloys and Compounds. 1047. 185011–185011.

Sozinov, A., Ladislav Straka, Petr Veřtát, et al.. (2024). Stability of incommensurately modulated Ni50Mn27Ga22Fe1 10M martensite under uniaxial tensile stress. Scripta Materialia. 247. 116096–116096.

Vecchis, Pierangeli Rodriguez De, et al.. (2024). Powder-blown laser-based directed energy deposition of (14M) Ni-Mn-Ga magnetic shape memory alloy. Additive manufacturing. 90. 104328–104328. 2 indexed citations

Ullakko, K., et al.. (2024). In-situ alloying laser powder bed fusion of Ni-Mn-Ga magnetic shape memory alloy using liquid Ga. Progress in Additive Manufacturing. 9(6). 2363–2373. 4 indexed citations

Varzaneh, A. Ghotbi, P. Kameli, Jingyuan Xu, et al.. (2023). Transformation behavior and inverse magnetocaloric effect in Ni45Co5Mn36.7In13.3-Ge melt-spun ribbons. Intermetallics. 165. 108152–108152. 3 indexed citations

Ullakko, K., et al.. (2023). Development of a build volume reduction kit for studying epitaxial re-solidification in laser powder bed fusion. IOP Conference Series Materials Science and Engineering. 1296(1). 12018–12018. 6 indexed citations

Ullakko, K., et al.. (2023). Magnetic smart materials enabled micro-pump: design, modeling, and performance analysis. Vibroengineering PROCEDIA. 50. 264–270.

10.

Hu, Hao, et al.. (2023). Prediction of Wafer Handling-Induced Point Defects in 300 mm Silicon Wafer Manufacturing from Edge Geometric Data. Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena. 345. 181–191. 1 indexed citations

11.

Hu, Hao & K. Ullakko. (2023). Selective Etch for Micromachining Process in Manufacturing Hybrid Microdevices composed of Ni-Mn-Ga and Silicon Layers. Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena. 344. 81–88.

12.

Ullakko, K., et al.. (2023). Effects of machining parameters on Ni-Mn-Ga-based alloys for fabrication of multifunctional micro devices using femtosecond pulse width laser. IOP Conference Series Materials Science and Engineering. 1296(1). 12040–12040. 2 indexed citations

13.

Ullakko, K., et al.. (2022). Laser powder bed fusion of (14 M) Ni-Mn-Ga magnetic shape memory alloy lattices. Additive manufacturing. 60. 103231–103231. 16 indexed citations

14.

Sozinov, A., et al.. (2022). Effects of 1 at.% additions of Co, Fe, Cu, and Cr on the properties of Ni-Mn-Ga-based magnetic shape memory alloys. Scripta Materialia. 224. 115116–115116. 11 indexed citations

15.

Saren, Andrey, et al.. (2020). Auto-Aspirated DAF Sparger Study on Flow Hydrodynamics, Bubble Generation and Aeration Efficiency. Processes. 8(11). 1498–1498. 5 indexed citations

16.

Feuchtwanger, J., et al.. (2017). High temperature Ni 45 Co 5 Mn 25−x Fe x Ga 20 Cu 5 ferromagnetic shape memory alloys. Scripta Materialia. 134. 119–122. 15 indexed citations

17.

Heczko, Oleg, et al.. (2003). Magnetic properties of Ni-Mn-Ga ribbon prepared by rapid solidification. AE7–AE7.

18.

Heczko, Oleg, A. Sozinov, & K. Ullakko. (2000). Giant field-induced reversible strain in magnetic shape memory NiMnGa alloy. IEEE Transactions on Magnetics. 36(5). 3266–3268. 313 indexed citations

19.

Gavriljuk, V.G., et al.. (1996). Internal friction in hydrogen-charged CrNi and CrNiMn austenitic stainless steels. Metallurgical and Materials Transactions A. 27(7). 1815–1821. 20 indexed citations

20.

Gavriljuk, V.G., et al.. (1995). Phase transformations and relaxation phenomena caused by hydrogen in stable austenitic stainless steels. Acta Metallurgica et Materialia. 43(2). 559–568. 25 indexed citations

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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