O. Johnsen

809 total citations
36 papers, 701 citations indexed

About

O. Johnsen is a scholar working on Electronic, Optical and Magnetic Materials, Geophysics and Geochemistry and Petrology. According to data from OpenAlex, O. Johnsen has authored 36 papers receiving a total of 701 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Electronic, Optical and Magnetic Materials, 11 papers in Geophysics and 9 papers in Geochemistry and Petrology. Recurrent topics in O. Johnsen's work include Crystal Structures and Properties (17 papers), Geological and Geochemical Analysis (9 papers) and Mineralogy and Gemology Studies (8 papers). O. Johnsen is often cited by papers focused on Crystal Structures and Properties (17 papers), Geological and Geochemical Analysis (9 papers) and Mineralogy and Gemology Studies (8 papers). O. Johnsen collaborates with scholars based in Denmark, Canada and United Kingdom. O. Johnsen's co-authors include Joel D. Grice, R. A. Gault, N.R.J. Poolton, L. Bøtter-Jensen, J. D. Grice, Emil Makovicky, Igor V. Pekov, A. R. Kampf, F. M. Quinn and P.M. Denby and has published in prestigious journals such as Journal of Physics Condensed Matter, Journal of Physics D Applied Physics and physica status solidi (b).

In The Last Decade

O. Johnsen

36 papers receiving 669 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
O. Johnsen Denmark	15	312	254	200	191	130	36	701
R. A. Gault Canada	17	513 1.6×	425 1.7×	283 1.4×	335 1.8×	157 1.2×	73	993
Isao Kusachi Japan	18	338 1.1×	392 1.5×	359 1.8×	98 0.5×	66 0.5×	87	985
Y. A. Abdu Canada	17	448 1.4×	411 1.6×	236 1.2×	231 1.2×	133 1.0×	81	899
Satοshi Matsubara Japan	16	338 1.1×	394 1.6×	234 1.2×	172 0.9×	46 0.4×	88	738
Yury S. Polekhovsky Russia	17	393 1.3×	308 1.2×	204 1.0×	212 1.1×	57 0.4×	54	751
M. Andrut Austria	18	293 0.9×	420 1.7×	171 0.9×	71 0.4×	35 0.3×	36	725
R. B. Ferguson Canada	16	206 0.7×	192 0.8×	280 1.4×	150 0.8×	53 0.4×	31	691
Vittorio Tazzoli Italy	22	323 1.0×	616 2.4×	527 2.6×	230 1.2×	49 0.4×	55	1.3k
Curziο Cipriani Italy	19	188 0.6×	290 1.1×	280 1.4×	74 0.4×	22 0.2×	48	895
П. М. Карташов Russia	14	203 0.7×	411 1.6×	219 1.1×	194 1.0×	36 0.3×	67	695

Countries citing papers authored by O. Johnsen

Since Specialization

Citations

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

Fields of papers citing papers by O. Johnsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of O. Johnsen

This figure shows the co-authorship network connecting the top 25 collaborators of O. Johnsen. A scholar is included among the top collaborators of O. Johnsen 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 O. Johnsen. O. Johnsen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Weihe, Høgni, Stergios Piligkos, A.-L. Barra, I. Laursen, & O. Johnsen. (2008). EPR OF Mn²⁺ IMPURITIES IN CALCITE: A DETAILED STUDY PERTINENT TO MARBLE PROVENANCE DETERMINATION*. Archaeometry. 51(1). 43–48. 13 indexed citations

Raade, Gunnar, et al.. (2007). Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure. Mineralogical Magazine. 71(2). 179–192. 8 indexed citations

Poolton, N.R.J., E. Pantos, B. Hamilton, P.M. Denby, & O. Johnsen. (2004). Application of wavelength‐resolved optically‐detected XAS methods to phase‐segregated silicates. physica status solidi (b). 241(15). 3656–3663. 4 indexed citations

Johnsen, O., J. D. Grice, & R. A. Gault. (2003). FERROKENTBROOKSITE, A NEW MEMBER OF THE EUDIALYTE GROUP FROM MONT SAINT-HILAIRE, QUEBEC, CANADA. The Canadian Mineralogist. 41(1). 55–60. 12 indexed citations

Johnsen, O., et al.. (2003). CRYSTAL CHEMISTRY OF THE ROSENBUSCHITE GROUP. The Canadian Mineralogist. 41(5). 1203–1224. 46 indexed citations

Johnsen, O., et al.. (2002). Lovdarite from the Ilimaussaq alkaline complex, South Greenland. Neues Jahrbuch für Mineralogie - Monatshefte. 2002(1). 23–30. 7 indexed citations

Johnsen, O., Joel D. Grice, & R. A. Gault. (1999). Oneillite; a new Ca-deficient and REE-rich member of the eudialyte group from Mont Saint-Hilaire, Quebec, Canada. The Canadian Mineralogist. 37(5). 1295–1301. 18 indexed citations

Johnsen, O., et al.. (1999). STRUCTURE REFINEMENT OF NATURAL NON-METAMICT POLYCRASE-(Y) FROM ZOMBA-MALOSA COMPLEX, MALAWI. Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU). 1–10. 5 indexed citations

Johnsen, O. & Joel D. Grice. (1999). The crystal chemistry of the eudialyte group. The Canadian Mineralogist. 37(4). 865–891. 89 indexed citations

10.

Johnsen, O., R. A. Gault, Joel D. Grice, & T. S. Ercit. (1999). KHOMYAKOVITE AND MANGANOKHOMYAKOVITE, TWO NEW MEMBERS OF THE EUDIALYTE GROUP FROM MONT SAINT-HILAIRE, QUEBEC, CANADA. The Canadian Mineralogist. 37(4). 893–899. 19 indexed citations

11.

Johnsen, O., et al.. (1998). Crystal structure of kupletskite from the Kangerdlugssuaq intrusion, East Greenland. Research at the University of Copenhagen (University of Copenhagen). 4 indexed citations

12.

Poolton, N.R.J., L. Bøtter-Jensen, & O. Johnsen. (1997). A search for IRSL-active dosemeters with enhanced sensitivity: A spectroscopic survey. Radiation Measurements. 27(2). 279–290. 6 indexed citations

13.

Johnsen, O. & R. A. Gault. (1997). Chemical variation in eudialyte. Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry. 171(3). 215–237. 26 indexed citations

14.

Poolton, N.R.J., L. Bøtter-Jensen, & O. Johnsen. (1995). Influence on donor electron energies of the chemical composition of K, Na and Ca aluminosilicates. Journal of Physics Condensed Matter. 7(24). 4751–4762. 25 indexed citations

15.

Khomyakov, A. P., et al.. (1994). Karasugite, SrCaAl[F,(OH)]7, a new mineral species from the Karasug Fe-REE-barite-fluorite deposit, Tannu-Ola Range, South Siberia, Russia. Neues Jahrbuch für Mineralogie - Monatshefte. 1994(5). 209–216. 2 indexed citations

16.

Johnsen, O., et al.. (1984). Kvanefjeldite, a new mineral species from the Ilimaussaq alkaline complex, Southwest Greenland. The Canadian Mineralogist. 22(3). 465–467. 2 indexed citations

17.

Hansen, Staffan, Lars Fälth, & O. Johnsen. (1984). Bergslagite, a mineral with tetrahedral berylloarsenate sheet anions. Zeitschrift für Kristallographie - Crystalline Materials. 166(1-4). 73–80. 10 indexed citations

18.

Johnsen, O., et al.. (1980). First occurrence of the rare mineral Barylite in Greenland. Mineralogy and Petrology. 27(1). 35–39. 3 indexed citations

19.

Upton, B. G. J., et al.. (1978). Emeleusite: a new LiNaFe^III silicate from south Greenland. Mineralogical Magazine. 42(321). 31–34. 12 indexed citations

20.

Johnsen, O., Kurt Nielsen, & Inger Søtofte. (1978). The crystal structure of emeleusite, a novel example of sechser-doppelkette. Zeitschrift für Kristallographie. 147(3-4). 297–306. 7 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.

Explore authors with similar magnitude of impact