{"id":"https://openalex.org/W2000006817","doi":"https://doi.org/10.1080/00150199508223586","title":"Theory of spontaneous polarization and birefringence in the tetragonal phase of KNbO3","display_name":"Theory of spontaneous polarization and birefringence in the tetragonal phase of KNbO3","publication_year":1995,"publication_date":"1995-04-01","ids":{"openalex":"https://openalex.org/W2000006817","doi":"https://doi.org/10.1080/00150199508223586","mag":"2000006817"},"language":"en","primary_location":{"id":"doi:10.1080/00150199508223586","doi":"https://doi.org/10.1080/00150199508223586","is_oa":false,"landing_page_url":"https://doi.org/10.1080/00150199508223586","pdf_url":null,"source":{"id":"https://openalex.org/S154037165","display_name":"Ferroelectrics","issn_l":"0015-0193","issn":["0015-0193","1026-7484","1563-5112"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Ferroelectrics","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5008745958","display_name":"D. Khatib","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210088687","display_name":"Universit\u00e9 Ibn Zohr","ror":"https://ror.org/006sgpv47","country_code":"MA","type":"education","lineage":["https://openalex.org/I4210088687"]}],"countries":["MA"],"is_corresponding":false,"raw_author_name":"D. Khatib","raw_affiliation_strings":["D\u00e9partement de Physique, Facult\u00e9 des Sciences, Equipe de Physique du Solide Th\u00e9orique, BP:28/S, Universit\u00e9 Ibnou Zohr, Agadir, Maroc"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"D\u00e9partement de Physique, Facult\u00e9 des Sciences, Equipe de Physique du Solide Th\u00e9orique, BP:28/S, Universit\u00e9 Ibnou Zohr, Agadir, Maroc","institution_ids":["https://openalex.org/I4210088687"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043816917","display_name":"Wataru Kinase","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I150744194","display_name":"Waseda University","ror":"https://ror.org/00ntfnx83","country_code":"JP","type":"education","lineage":["https://openalex.org/I150744194"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"W. Kinase","raw_affiliation_strings":["Department of Physics, School of Science and Engineering, Waseda University, 3-Okubo, Shinjuku-Ku, Tokyo, 169, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, School of Science and Engineering, Waseda University, 3-Okubo, Shinjuku-Ku, Tokyo, 169, Japan","institution_ids":["https://openalex.org/I150744194"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055777303","display_name":"L. Bougarfa","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210088687","display_name":"Universit\u00e9 Ibn Zohr","ror":"https://ror.org/006sgpv47","country_code":"MA","type":"education","lineage":["https://openalex.org/I4210088687"]}],"countries":["MA"],"is_corresponding":false,"raw_author_name":"L. Bougarfa","raw_affiliation_strings":["D\u00e9partement de Physique, Facult\u00e9 des Sciences, Equipe de Physique du Solide Th\u00e9orique, BP:28/S, Universit\u00e9 Ibnou Zohr, Agadir, Maroc"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"D\u00e9partement de Physique, Facult\u00e9 des Sciences, Equipe de Physique du Solide Th\u00e9orique, BP:28/S, Universit\u00e9 Ibnou Zohr, Agadir, Maroc","institution_ids":["https://openalex.org/I4210088687"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042741047","display_name":"Lahs\u00e8n Lifsal","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210088687","display_name":"Universit\u00e9 Ibn Zohr","ror":"https://ror.org/006sgpv47","country_code":"MA","type":"education","lineage":["https://openalex.org/I4210088687"]}],"countries":["MA"],"is_corresponding":false,"raw_author_name":"L. Lifsal","raw_affiliation_strings":["D\u00e9partement de Physique, Facult\u00e9 des Sciences, Equipe de Physique du Solide Th\u00e9orique, BP:28/S, Universit\u00e9 Ibnou Zohr, Agadir, Maroc"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"D\u00e9partement de Physique, Facult\u00e9 des Sciences, Equipe de Physique du Solide Th\u00e9orique, BP:28/S, Universit\u00e9 Ibnou Zohr, Agadir, Maroc","institution_ids":["https://openalex.org/I4210088687"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5067086888","display_name":"Bernard Jannot","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I177064439","display_name":"Universit\u00e9 de Bourgogne","ror":"https://ror.org/03k1bsr36","country_code":"FR","type":"education","lineage":["https://openalex.org/I177064439","https://openalex.org/I4405253280"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"B. Jannot","raw_affiliation_strings":["Laboratoire de Physique du Solide, Equipe d'Optique des Mat\u00e9riaux, Universit\u00e9 de Bourgogne, BP:138, Dijon, 21004, France"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Laboratoire de Physique du Solide, Equipe d'Optique des Mat\u00e9riaux, Universit\u00e9 de Bourgogne, BP:138, Dijon, 21004, France","institution_ids":["https://openalex.org/I177064439"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.3263,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.5243005,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"166","issue":"1","first_page":"175","last_page":"180"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10107","display_name":"Ferroelectric and Piezoelectric Materials","score":0.9003999829292297,"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"}},"topics":[{"id":"https://openalex.org/T10107","display_name":"Ferroelectric and Piezoelectric Materials","score":0.9003999829292297,"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/T11050","display_name":"Photorefractive and Nonlinear Optics","score":0.07639999687671661,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11878","display_name":"Solid-state spectroscopy and crystallography","score":0.015599999576807022,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/potassium-niobate","display_name":"KNbO3","score":0.9409999847412109},{"id":"https://openalex.org/keywords/tetragonal-phase","display_name":"tetragonal phase","score":0.9629999995231628},{"id":"https://openalex.org/keywords/spontaneous-polarization","display_name":"spontaneous polarization","score":0.9789999723434448},{"id":"https://openalex.org/keywords/birefringence","display_name":"birefringence","score":0.906000018119812},{"id":"https://openalex.org/keywords/optical-anisotropy","display_name":"optical anisotropy","score":0.9729999899864197},{"id":"https://openalex.org/keywords/dipole-dipole-interaction","display_name":"dipole-dipole interaction","score":0.972000002861023},{"id":"https://openalex.org/keywords/ionic-polarization","display_name":"ionic polarization","score":0.7689999938011169},{"id":"https://openalex.org/keywords/electronic-polarization","display_name":"electronic polarization","score":0.9959999918937683},{"id":"https://openalex.org/keywords/local-field-effects","display_name":"local field effects","score":0.6269999742507935}],"concepts":[{"id":"https://openalex.org/C170751736","wikidata":"https://www.wikidata.org/wiki/Q503601","display_name":"Tetragonal crystal system","level":3,"score":0.8413143754005432},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.8168896436691284},{"id":"https://openalex.org/C125743686","wikidata":"https://www.wikidata.org/wiki/Q108779","display_name":"Birefringence","level":2,"score":0.8092623949050903},{"id":"https://openalex.org/C205049153","wikidata":"https://www.wikidata.org/wiki/Q2698605","display_name":"Polarization (electrochemistry)","level":2,"score":0.6930938959121704},{"id":"https://openalex.org/C173523689","wikidata":"https://www.wikidata.org/wiki/Q215589","display_name":"Dipole","level":2,"score":0.6421031355857849},{"id":"https://openalex.org/C26873012","wikidata":"https://www.wikidata.org/wiki/Q214781","display_name":"Condensed matter physics","level":1,"score":0.580703854560852},{"id":"https://openalex.org/C85725439","wikidata":"https://www.wikidata.org/wiki/Q466686","display_name":"Anisotropy","level":2,"score":0.5784993171691895},{"id":"https://openalex.org/C2182769","wikidata":"https://www.wikidata.org/wiki/Q62500","display_name":"Ionic bonding","level":3,"score":0.5235254764556885},{"id":"https://openalex.org/C83326497","wikidata":"https://www.wikidata.org/wiki/Q2593282","display_name":"Antiferroelectricity","level":4,"score":0.453851580619812},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.4130250811576843},{"id":"https://openalex.org/C145148216","wikidata":"https://www.wikidata.org/wiki/Q36496","display_name":"Ion","level":2,"score":0.40135252475738525},{"id":"https://openalex.org/C79090758","wikidata":"https://www.wikidata.org/wiki/Q1045739","display_name":"Ferroelectricity","level":3,"score":0.31972721219062805},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.2711806297302246},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.16262808442115784},{"id":"https://openalex.org/C133386390","wikidata":"https://www.wikidata.org/wiki/Q184996","display_name":"Dielectric","level":2,"score":0.10879448056221008},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.08878645300865173},{"id":"https://openalex.org/C147789679","wikidata":"https://www.wikidata.org/wiki/Q11372","display_name":"Physical chemistry","level":1,"score":0.07393109798431396},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.059847116470336914},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1080/00150199508223586","doi":"https://doi.org/10.1080/00150199508223586","is_oa":false,"landing_page_url":"https://doi.org/10.1080/00150199508223586","pdf_url":null,"source":{"id":"https://openalex.org/S154037165","display_name":"Ferroelectrics","issn_l":"0015-0193","issn":["0015-0193","1026-7484","1563-5112"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Ferroelectrics","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":18,"referenced_works":["https://openalex.org/W1964274561","https://openalex.org/W1973100249","https://openalex.org/W2005773902","https://openalex.org/W2038292896","https://openalex.org/W2045339866","https://openalex.org/W2052974788","https://openalex.org/W2058101240","https://openalex.org/W2058399814","https://openalex.org/W2060501150","https://openalex.org/W2072733068","https://openalex.org/W2073477559","https://openalex.org/W2094979120","https://openalex.org/W2095099088","https://openalex.org/W2122711770","https://openalex.org/W2131034946","https://openalex.org/W2166347535","https://openalex.org/W2737644623","https://openalex.org/W4230458250"],"related_works":["https://openalex.org/W1990467390","https://openalex.org/W2042190605","https://openalex.org/W2085122883","https://openalex.org/W2081106813","https://openalex.org/W2011954102","https://openalex.org/W3165313251","https://openalex.org/W2074803126","https://openalex.org/W2068995094","https://openalex.org/W1971813110","https://openalex.org/W2056735637"],"abstract_inverted_index":{"The":[0,35],"microscopic":[1],"mechanism":[2],"of":[3,10,16,27,41],"optical":[4],"anisotropy":[5],"in":[6,72],"the":[7,17,22,28,31,42,48,52,58,65,68,76],"tetragonal":[8],"phase":[9],"KNbO3":[11],"is":[12,38,62],"discussed":[13],"taking":[14],"account":[15],"dipole-dipole":[18],"effect":[19,37],"due":[20],"to":[21],"ionic":[23],"and":[24,30,67],"electronic":[25],"polarizations":[26],"crystal":[29],"spontaneous":[32,53,69],"Kerr":[33],"effect.":[34,60],"last":[36],"a":[39],"cause":[40],"strong":[43],"local":[44],"field":[45],"acting":[46],"on":[47],"constituent":[49],"ions.":[50],"For":[51],"polarization":[54,70],"we":[55],"use":[56],"only":[57],"first":[59],"It":[61],"found":[63],"that":[64],"birefringence":[66],"are":[71],"good":[73],"agreement":[74],"with":[75],"experimental":[77],"data.":[78]},"counts_by_year":[],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}