Electron Transfer between Different Lanthanide Centers in BaF{sub 2} Crystals—Part II: Transfer Mechanisms
Processes of photo-induced electron transfer from a bivalent acceptor lanthanide (Eu, Sm, and Yb) onto a trivalent donor lanthanide (Nd, Sm, Dy, Tm, and Yb) and the inverse thermally activated transfer are studied in barium fluoride crystals. At room temperature, photoinduced electron transfer is ac...
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| Veröffentlicht in: | Physics of the solid state 2019-05, Vol.61 (5) |
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| creator | Radzhabov, E. A. Kozlovskii, V. A. |
| description | Processes of photo-induced electron transfer from a bivalent acceptor lanthanide (Eu, Sm, and Yb) onto a trivalent donor lanthanide (Nd, Sm, Dy, Tm, and Yb) and the inverse thermally activated transfer are studied in barium fluoride crystals. At room temperature, photoinduced electron transfer is accompanied by oncoming displacement of the interstitial charge-compensating fluoride ion. On photoquenching at low temperatures, a bivalent donor lanthanide remains next to the interstitial fluoride ion, which causes a redshift of its 4f–5d absorption bands. The shift increases as the lanthanide size decreases (as in the series Nd, Sm, Dy, Tm, and Yb). A detailed analysis of the mechanisms of photo and thermal electron transfers between the different lanthanide centers in BaF{sub 2} crystals is provided. |
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A.</creatorcontrib><creatorcontrib>Kozlovskii, V. A.</creatorcontrib><title>Electron Transfer between Different Lanthanide Centers in BaF{sub 2} Crystals—Part II: Transfer Mechanisms</title><title>Physics of the solid state</title><description>Processes of photo-induced electron transfer from a bivalent acceptor lanthanide (Eu, Sm, and Yb) onto a trivalent donor lanthanide (Nd, Sm, Dy, Tm, and Yb) and the inverse thermally activated transfer are studied in barium fluoride crystals. At room temperature, photoinduced electron transfer is accompanied by oncoming displacement of the interstitial charge-compensating fluoride ion. On photoquenching at low temperatures, a bivalent donor lanthanide remains next to the interstitial fluoride ion, which causes a redshift of its 4f–5d absorption bands. The shift increases as the lanthanide size decreases (as in the series Nd, Sm, Dy, Tm, and Yb). A detailed analysis of the mechanisms of photo and thermal electron transfers between the different lanthanide centers in BaF{sub 2} crystals is provided.</description><subject>AMBIENT TEMPERATURE</subject><subject>BARIUM FLUORIDES</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>CRYSTALS</subject><subject>ELECTRON TRANSFER</subject><subject>INTERSTITIALS</subject><subject>RARE EARTHS</subject><subject>RED SHIFT</subject><subject>TEMPERATURE RANGE 0065-0273 K</subject><subject>TEMPERATURE RANGE 0273-0400 K</subject><issn>1063-7834</issn><issn>1090-6460</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqNjs2qwjAUhIMo-PsOB1wXklSrdWmvcgUFF-4l1lOM1FPIiYhcBB_CJ_RJjCDcrauZgW-GqYmWkqmMkkEi62-fxNFoHA-aos18lFIpNUxbopyVmHtXEWycIS7QwQ79BZHgxxYhInlYGvIHQ3aPkIWMjsESTM38j8870DfI3JW9Kfl5f6yN87BYTP73Vpi_y3zirmgUgcLeRzuiP59tst-oYm-3nFsf0LwiCpe2Wqd6qMcq_o56AfZ0S10</recordid><startdate>20190515</startdate><enddate>20190515</enddate><creator>Radzhabov, E. A.</creator><creator>Kozlovskii, V. A.</creator><scope>OTOTI</scope></search><sort><creationdate>20190515</creationdate><title>Electron Transfer between Different Lanthanide Centers in BaF{sub 2} Crystals—Part II: Transfer Mechanisms</title><author>Radzhabov, E. A. ; Kozlovskii, V. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_229252813</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>AMBIENT TEMPERATURE</topic><topic>BARIUM FLUORIDES</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>CRYSTALS</topic><topic>ELECTRON TRANSFER</topic><topic>INTERSTITIALS</topic><topic>RARE EARTHS</topic><topic>RED SHIFT</topic><topic>TEMPERATURE RANGE 0065-0273 K</topic><topic>TEMPERATURE RANGE 0273-0400 K</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Radzhabov, E. A.</creatorcontrib><creatorcontrib>Kozlovskii, V. A.</creatorcontrib><collection>OSTI.GOV</collection><jtitle>Physics of the solid state</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Radzhabov, E. A.</au><au>Kozlovskii, V. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electron Transfer between Different Lanthanide Centers in BaF{sub 2} Crystals—Part II: Transfer Mechanisms</atitle><jtitle>Physics of the solid state</jtitle><date>2019-05-15</date><risdate>2019</risdate><volume>61</volume><issue>5</issue><issn>1063-7834</issn><eissn>1090-6460</eissn><abstract>Processes of photo-induced electron transfer from a bivalent acceptor lanthanide (Eu, Sm, and Yb) onto a trivalent donor lanthanide (Nd, Sm, Dy, Tm, and Yb) and the inverse thermally activated transfer are studied in barium fluoride crystals. At room temperature, photoinduced electron transfer is accompanied by oncoming displacement of the interstitial charge-compensating fluoride ion. On photoquenching at low temperatures, a bivalent donor lanthanide remains next to the interstitial fluoride ion, which causes a redshift of its 4f–5d absorption bands. The shift increases as the lanthanide size decreases (as in the series Nd, Sm, Dy, Tm, and Yb). A detailed analysis of the mechanisms of photo and thermal electron transfers between the different lanthanide centers in BaF{sub 2} crystals is provided.</abstract><cop>United States</cop></addata></record> |
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| subjects | AMBIENT TEMPERATURE BARIUM FLUORIDES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CRYSTALS ELECTRON TRANSFER INTERSTITIALS RARE EARTHS RED SHIFT TEMPERATURE RANGE 0065-0273 K TEMPERATURE RANGE 0273-0400 K |
| title | Electron Transfer between Different Lanthanide Centers in BaF{sub 2} Crystals—Part II: Transfer Mechanisms |
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