{"id":"https://openalex.org/A5087644358","orcid":null,"observed_orcids":[],"display_name":"Nikolaj A. Sergeev","raw_author_names":["N A Sergeev","N. A Sergeev","N. A. SERGEEV","N. A. Sergeev","N. Sergeev","N.A Sergeev","N.A. Sergeev","Nikolaj A. Sergeev","Nikolaj Sergeev","Nikolay A. Sergeev"],"full_name":"Nikolaj A. Sergeev","works_count":98,"cited_by_count":643,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":12,"i10_index":19},"ids":{"openalex":"https://openalex.org/A5087644358","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I104588304","ror":"https://ror.org/05vmz5070","display_name":"University of Szczecin","country_code":"PL","type":"education","lineage":["https://openalex.org/I104588304"]},"years":[2019,2018,2017,2016,2015,2014,2013,2012,2010,2008,2007,2006,2004,2003,2002,2000,1999,1998,1997]},{"institution":{"id":"https://openalex.org/I182456642","ror":"https://ror.org/04748z305","display_name":"Taurida National V.I. Vernadsky University","country_code":"UA","type":"education","lineage":["https://openalex.org/I182456642"]},"years":[2001]},{"institution":{"id":"https://openalex.org/I4210114156","ror":"https://ror.org/02707gg79","display_name":"Vlokh Institute of Physical Optics","country_code":"UA","type":"facility","lineage":["https://openalex.org/I4210114156"]},"years":[2015]},{"institution":{"id":"https://openalex.org/I4210120086","ror":"https://ror.org/029bjdf19","display_name":"Institute of Physics","country_code":"RU","type":"facility","lineage":["https://openalex.org/I1313323035","https://openalex.org/I4210096333","https://openalex.org/I4210120086"]},"years":[1985,1983,1981,1979,1975,1972]},{"institution":{"id":"https://openalex.org/I4210143294","ror":"https://ror.org/04zpmt351","display_name":"Nikolaev Institute of Inorganic Chemistry","country_code":"RU","type":"facility","lineage":["https://openalex.org/I1313323035","https://openalex.org/I4210143294","https://openalex.org/I4210145551"]},"years":[2016]},{"institution":{"id":"https://openalex.org/I4405285364","ror":"https://ror.org/059mhqh10","display_name":"Academy of Sciences of the Soviet Union","country_code":"RU","type":"government","lineage":["https://openalex.org/I1313323035","https://openalex.org/I4405285364"]},"years":[1987,1985,1983,1975]}],"last_known_institutions":[{"id":"https://openalex.org/I104588304","ror":"https://ror.org/05vmz5070","display_name":"University of Szczecin","country_code":"PL","type":"education","lineage":["https://openalex.org/I104588304"]}],"topics":[{"id":"https://openalex.org/T11809","display_name":"Advanced NMR Techniques and Applications","count":82,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11878","display_name":"Solid-state spectroscopy and crystallography","count":48,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12603","display_name":"NMR spectroscopy and applications","count":41,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12381","display_name":"Electron Spin Resonance Studies","count":34,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10478","display_name":"Diamond and Carbon-based Materials Research","count":9,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T12603","display_name":"NMR spectroscopy and applications","value":0.0004217,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11809","display_name":"Advanced NMR Techniques and Applications","value":0.0002735,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12381","display_name":"Electron Spin Resonance Studies","value":0.0002377,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11878","display_name":"Solid-state spectroscopy and crystallography","value":0.000166,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10478","display_name":"Diamond and Carbon-based Materials Research","value":6.91e-05,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.9521706104278564},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.8638803958892822},{"id":"26873012","wikidata":"https://www.wikidata.org/wiki/Q214781","display_name":"Condensed matter physics","score":0.8356046676635742},{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.7802717685699463},{"id":"46141821","wikidata":"https://www.wikidata.org/wiki/Q209402","display_name":"Nuclear magnetic resonance","score":0.5869349241256714}],"counts_by_year":[{"year":1972,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1974,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1975,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1977,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1978,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1979,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1984,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1998,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2004,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2005,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":2,"oa_works_count":0,"cited_by_count":16},{"year":2013,"works_count":1,"oa_works_count":1,"cited_by_count":12},{"year":2014,"works_count":4,"oa_works_count":0,"cited_by_count":19},{"year":2015,"works_count":7,"oa_works_count":5,"cited_by_count":31},{"year":2016,"works_count":7,"oa_works_count":3,"cited_by_count":50},{"year":2017,"works_count":2,"oa_works_count":2,"cited_by_count":40},{"year":2018,"works_count":3,"oa_works_count":0,"cited_by_count":38},{"year":2019,"works_count":2,"oa_works_count":1,"cited_by_count":52},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":46},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":28},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":25},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":29},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":33},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":31},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":16}],"display_name_alternatives":["N A Sergeev","N. A Sergeev","N. A. SERGEEV","N. A. Sergeev","N. Sergeev","N.A Sergeev","N.A. Sergeev","Nikolaj A. Sergeev","Nikolaj Sergeev","Nikolay A. Sergeev"],"block_key":"n sergeev","works_api_url":"https://api.openalex.org/works?filter=author.id:A5087644358","updated_date":"2026-11-04T11:47:51","created_date":"2016-06-24T00:00:00"}