Structural, optical, and electrical properties of SmNbO4

Rare-earth orthoniobates constitute a class of materials that has been exploited due to their interesting physical properties depending on the lanthanide element. Besides paramagnetism, ferroelasticity, and negative compressibility, these materials are known by their interesting optical properties a...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of applied physics 2016-08, Vol.120 (5)
Hauptverfasser: Nico, C., Soares, M. R. N., Costa, F. M., Monteiro, T., Graça, M. P. F.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue 5
container_start_page
container_title Journal of applied physics
container_volume 120
creator Nico, C.
Soares, M. R. N.
Costa, F. M.
Monteiro, T.
Graça, M. P. F.
description Rare-earth orthoniobates constitute a class of materials that has been exploited due to their interesting physical properties depending on the lanthanide element. Besides paramagnetism, ferroelasticity, and negative compressibility, these materials are known by their interesting optical properties and mixed types of conduction processes (protonic, ionic, and electronic). In this work, two types of SmNbO4 samples were studied: polycrystalline samples, prepared by a sol-gel route using the Pechini method, and single crystalline fibres grown by the Laser Floating Zone technique. These samples were structurally characterized based on powder and single-crystal X-ray diffraction studies. A metastable tetragonal phase, stabilized by grain size, was identified in the synthesized powders. After a sintering process of such powders, a single monoclinic phase was obtained. Complementarily, scanning electron microscopy and Raman spectroscopy analyses were performed to these samples. Photoluminescence and photoluminescence excitation spectroscopic studies allowed identifying more than one optically active centre of the trivalent samarium ion in the analysed material. Impedance spectroscopy measurements have shown a large variation of the ac conductivity as a function of temperature, assigned to a protonic conduction and to native ionic conduction mechanisms.
doi_str_mv 10.1063/1.4958953
format Article
fullrecord <record><control><sourceid>proquest_scita</sourceid><recordid>TN_cdi_scitation_primary_10_1063_1_4958953</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2121714914</sourcerecordid><originalsourceid>FETCH-LOGICAL-c364t-4193d8131ceeaf56cfdf0be0722c6de3d15f88c668e1afc4671b8fd7a9ac62153</originalsourceid><addsrcrecordid>eNqd0EtLAzEQB_AgCq7Vg99gwZPi1szmsclRii8o9lA9h2wesKXdrElW8Nu7pQXvnmYGfswMf4SuAc8Bc_IAcyqZkIycoAKwkFXDGD5FBcY1VEI28hxdpLTBGEAQWSCxznE0eYx6e1-GIXdm3-jelm7rTI77uRxiGFzMnUtl8OV6996u6CU683qb3NWxztDn89PH4rVarl7eFo_LyhBOc0VBEiuAgHFOe8aNtx63Djd1bbh1xALzQhjOhQPtDeUNtMLbRktteA2MzNDNYe_0xNfoUlabMMZ-OqlqqKEBKoFO6vagTAwpRefVELudjj8KsNoHo0Adg5ns3cEm02Wdu9D_D3-H-AfVYD35BYZHcHg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2121714914</pqid></control><display><type>article</type><title>Structural, optical, and electrical properties of SmNbO4</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Nico, C. ; Soares, M. R. N. ; Costa, F. M. ; Monteiro, T. ; Graça, M. P. F.</creator><creatorcontrib>Nico, C. ; Soares, M. R. N. ; Costa, F. M. ; Monteiro, T. ; Graça, M. P. F.</creatorcontrib><description>Rare-earth orthoniobates constitute a class of materials that has been exploited due to their interesting physical properties depending on the lanthanide element. Besides paramagnetism, ferroelasticity, and negative compressibility, these materials are known by their interesting optical properties and mixed types of conduction processes (protonic, ionic, and electronic). In this work, two types of SmNbO4 samples were studied: polycrystalline samples, prepared by a sol-gel route using the Pechini method, and single crystalline fibres grown by the Laser Floating Zone technique. These samples were structurally characterized based on powder and single-crystal X-ray diffraction studies. A metastable tetragonal phase, stabilized by grain size, was identified in the synthesized powders. After a sintering process of such powders, a single monoclinic phase was obtained. Complementarily, scanning electron microscopy and Raman spectroscopy analyses were performed to these samples. Photoluminescence and photoluminescence excitation spectroscopic studies allowed identifying more than one optically active centre of the trivalent samarium ion in the analysed material. Impedance spectroscopy measurements have shown a large variation of the ac conductivity as a function of temperature, assigned to a protonic conduction and to native ionic conduction mechanisms.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.4958953</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Compressibility ; Crystal structure ; Electrical properties ; Electrical resistivity ; Excitation spectra ; Ferroelasticity ; Floating structures ; Optical activity ; Optical properties ; Paramagnetism ; Photoluminescence ; Physical properties ; Raman spectroscopy ; Rare earth elements ; Samarium ; Scanning electron microscopy ; Single crystals ; Sintering (powder metallurgy) ; Sol-gel processes ; Spectroscopic analysis ; Spectrum analysis ; X-ray diffraction</subject><ispartof>Journal of applied physics, 2016-08, Vol.120 (5)</ispartof><rights>Author(s)</rights><rights>2016 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c364t-4193d8131ceeaf56cfdf0be0722c6de3d15f88c668e1afc4671b8fd7a9ac62153</citedby><cites>FETCH-LOGICAL-c364t-4193d8131ceeaf56cfdf0be0722c6de3d15f88c668e1afc4671b8fd7a9ac62153</cites><orcidid>0000-0001-6945-2759 ; 0000-0002-6858-9507</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/1.4958953$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,784,794,4512,27924,27925,76256</link.rule.ids></links><search><creatorcontrib>Nico, C.</creatorcontrib><creatorcontrib>Soares, M. R. N.</creatorcontrib><creatorcontrib>Costa, F. M.</creatorcontrib><creatorcontrib>Monteiro, T.</creatorcontrib><creatorcontrib>Graça, M. P. F.</creatorcontrib><title>Structural, optical, and electrical properties of SmNbO4</title><title>Journal of applied physics</title><description>Rare-earth orthoniobates constitute a class of materials that has been exploited due to their interesting physical properties depending on the lanthanide element. Besides paramagnetism, ferroelasticity, and negative compressibility, these materials are known by their interesting optical properties and mixed types of conduction processes (protonic, ionic, and electronic). In this work, two types of SmNbO4 samples were studied: polycrystalline samples, prepared by a sol-gel route using the Pechini method, and single crystalline fibres grown by the Laser Floating Zone technique. These samples were structurally characterized based on powder and single-crystal X-ray diffraction studies. A metastable tetragonal phase, stabilized by grain size, was identified in the synthesized powders. After a sintering process of such powders, a single monoclinic phase was obtained. Complementarily, scanning electron microscopy and Raman spectroscopy analyses were performed to these samples. Photoluminescence and photoluminescence excitation spectroscopic studies allowed identifying more than one optically active centre of the trivalent samarium ion in the analysed material. Impedance spectroscopy measurements have shown a large variation of the ac conductivity as a function of temperature, assigned to a protonic conduction and to native ionic conduction mechanisms.</description><subject>Applied physics</subject><subject>Compressibility</subject><subject>Crystal structure</subject><subject>Electrical properties</subject><subject>Electrical resistivity</subject><subject>Excitation spectra</subject><subject>Ferroelasticity</subject><subject>Floating structures</subject><subject>Optical activity</subject><subject>Optical properties</subject><subject>Paramagnetism</subject><subject>Photoluminescence</subject><subject>Physical properties</subject><subject>Raman spectroscopy</subject><subject>Rare earth elements</subject><subject>Samarium</subject><subject>Scanning electron microscopy</subject><subject>Single crystals</subject><subject>Sintering (powder metallurgy)</subject><subject>Sol-gel processes</subject><subject>Spectroscopic analysis</subject><subject>Spectrum analysis</subject><subject>X-ray diffraction</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqd0EtLAzEQB_AgCq7Vg99gwZPi1szmsclRii8o9lA9h2wesKXdrElW8Nu7pQXvnmYGfswMf4SuAc8Bc_IAcyqZkIycoAKwkFXDGD5FBcY1VEI28hxdpLTBGEAQWSCxznE0eYx6e1-GIXdm3-jelm7rTI77uRxiGFzMnUtl8OV6996u6CU683qb3NWxztDn89PH4rVarl7eFo_LyhBOc0VBEiuAgHFOe8aNtx63Djd1bbh1xALzQhjOhQPtDeUNtMLbRktteA2MzNDNYe_0xNfoUlabMMZ-OqlqqKEBKoFO6vagTAwpRefVELudjj8KsNoHo0Adg5ns3cEm02Wdu9D_D3-H-AfVYD35BYZHcHg</recordid><startdate>20160807</startdate><enddate>20160807</enddate><creator>Nico, C.</creator><creator>Soares, M. R. N.</creator><creator>Costa, F. M.</creator><creator>Monteiro, T.</creator><creator>Graça, M. P. F.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-6945-2759</orcidid><orcidid>https://orcid.org/0000-0002-6858-9507</orcidid></search><sort><creationdate>20160807</creationdate><title>Structural, optical, and electrical properties of SmNbO4</title><author>Nico, C. ; Soares, M. R. N. ; Costa, F. M. ; Monteiro, T. ; Graça, M. P. F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-4193d8131ceeaf56cfdf0be0722c6de3d15f88c668e1afc4671b8fd7a9ac62153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Applied physics</topic><topic>Compressibility</topic><topic>Crystal structure</topic><topic>Electrical properties</topic><topic>Electrical resistivity</topic><topic>Excitation spectra</topic><topic>Ferroelasticity</topic><topic>Floating structures</topic><topic>Optical activity</topic><topic>Optical properties</topic><topic>Paramagnetism</topic><topic>Photoluminescence</topic><topic>Physical properties</topic><topic>Raman spectroscopy</topic><topic>Rare earth elements</topic><topic>Samarium</topic><topic>Scanning electron microscopy</topic><topic>Single crystals</topic><topic>Sintering (powder metallurgy)</topic><topic>Sol-gel processes</topic><topic>Spectroscopic analysis</topic><topic>Spectrum analysis</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nico, C.</creatorcontrib><creatorcontrib>Soares, M. R. N.</creatorcontrib><creatorcontrib>Costa, F. M.</creatorcontrib><creatorcontrib>Monteiro, T.</creatorcontrib><creatorcontrib>Graça, M. P. F.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nico, C.</au><au>Soares, M. R. N.</au><au>Costa, F. M.</au><au>Monteiro, T.</au><au>Graça, M. P. F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural, optical, and electrical properties of SmNbO4</atitle><jtitle>Journal of applied physics</jtitle><date>2016-08-07</date><risdate>2016</risdate><volume>120</volume><issue>5</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>Rare-earth orthoniobates constitute a class of materials that has been exploited due to their interesting physical properties depending on the lanthanide element. Besides paramagnetism, ferroelasticity, and negative compressibility, these materials are known by their interesting optical properties and mixed types of conduction processes (protonic, ionic, and electronic). In this work, two types of SmNbO4 samples were studied: polycrystalline samples, prepared by a sol-gel route using the Pechini method, and single crystalline fibres grown by the Laser Floating Zone technique. These samples were structurally characterized based on powder and single-crystal X-ray diffraction studies. A metastable tetragonal phase, stabilized by grain size, was identified in the synthesized powders. After a sintering process of such powders, a single monoclinic phase was obtained. Complementarily, scanning electron microscopy and Raman spectroscopy analyses were performed to these samples. Photoluminescence and photoluminescence excitation spectroscopic studies allowed identifying more than one optically active centre of the trivalent samarium ion in the analysed material. Impedance spectroscopy measurements have shown a large variation of the ac conductivity as a function of temperature, assigned to a protonic conduction and to native ionic conduction mechanisms.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4958953</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-6945-2759</orcidid><orcidid>https://orcid.org/0000-0002-6858-9507</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 0021-8979
ispartof Journal of applied physics, 2016-08, Vol.120 (5)
issn 0021-8979
1089-7550
language eng
recordid cdi_scitation_primary_10_1063_1_4958953
source AIP Journals Complete; Alma/SFX Local Collection
subjects Applied physics
Compressibility
Crystal structure
Electrical properties
Electrical resistivity
Excitation spectra
Ferroelasticity
Floating structures
Optical activity
Optical properties
Paramagnetism
Photoluminescence
Physical properties
Raman spectroscopy
Rare earth elements
Samarium
Scanning electron microscopy
Single crystals
Sintering (powder metallurgy)
Sol-gel processes
Spectroscopic analysis
Spectrum analysis
X-ray diffraction
title Structural, optical, and electrical properties of SmNbO4
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-07T22%3A05%3A00IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_scita&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Structural,%20optical,%20and%20electrical%20properties%20of%20SmNbO4&rft.jtitle=Journal%20of%20applied%20physics&rft.au=Nico,%20C.&rft.date=2016-08-07&rft.volume=120&rft.issue=5&rft.issn=0021-8979&rft.eissn=1089-7550&rft.coden=JAPIAU&rft_id=info:doi/10.1063/1.4958953&rft_dat=%3Cproquest_scita%3E2121714914%3C/proquest_scita%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2121714914&rft_id=info:pmid/&rfr_iscdi=true