Microwave Dielectric Loss of Titanium Oxide
The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations...
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| Autor*in: |
Templeton, Alan [verfasserIn] Wang, Xiaoru [verfasserIn] Penn, Stuart J. [verfasserIn] |
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E-Artikel |
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| Erschienen: |
Westerville, Ohio: American Ceramics Society ; 2000 |
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2008 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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In: Journal of the American Ceramic Society - American Ceramic Society ; GKD-ID: 6113X, Oxford [u.a.] : Wiley-Blackwell, 1918, 83(2000), 1, Seite 0 |
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volume:83 ; year:2000 ; number:1 ; pages:0 |
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10.1111/j.1151-2916.2000.tb01154.x |
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| 520 | |a The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. | ||
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10.1111/j.1151-2916.2000.tb01154.x doi (DE-627)NLEJ243475276 DE-627 ger DE-627 rakwb Templeton, Alan verfasserin aut Microwave Dielectric Loss of Titanium Oxide Westerville, Ohio American Ceramics Society 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| Titanium oxide Wang, Xiaoru verfasserin aut Penn, Stuart J. verfasserin aut Webb, Stephen J. oth Cohen, Lesley F. oth Alford, Neil McN. oth In American Ceramic Society ; GKD-ID: 6113X Journal of the American Ceramic Society Oxford [u.a.] : Wiley-Blackwell, 1918 83(2000), 1, Seite 0 Online-Ressource (DE-627)NLEJ243927835 (DE-600)2008170-4 1551-2916 nnns volume:83 year:2000 number:1 pages:0 http://dx.doi.org/10.1111/j.1151-2916.2000.tb01154.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 83 2000 1 0 |
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10.1111/j.1151-2916.2000.tb01154.x doi (DE-627)NLEJ243475276 DE-627 ger DE-627 rakwb Templeton, Alan verfasserin aut Microwave Dielectric Loss of Titanium Oxide Westerville, Ohio American Ceramics Society 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| Titanium oxide Wang, Xiaoru verfasserin aut Penn, Stuart J. verfasserin aut Webb, Stephen J. oth Cohen, Lesley F. oth Alford, Neil McN. oth In American Ceramic Society ; GKD-ID: 6113X Journal of the American Ceramic Society Oxford [u.a.] : Wiley-Blackwell, 1918 83(2000), 1, Seite 0 Online-Ressource (DE-627)NLEJ243927835 (DE-600)2008170-4 1551-2916 nnns volume:83 year:2000 number:1 pages:0 http://dx.doi.org/10.1111/j.1151-2916.2000.tb01154.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 83 2000 1 0 |
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10.1111/j.1151-2916.2000.tb01154.x doi (DE-627)NLEJ243475276 DE-627 ger DE-627 rakwb Templeton, Alan verfasserin aut Microwave Dielectric Loss of Titanium Oxide Westerville, Ohio American Ceramics Society 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| Titanium oxide Wang, Xiaoru verfasserin aut Penn, Stuart J. verfasserin aut Webb, Stephen J. oth Cohen, Lesley F. oth Alford, Neil McN. oth In American Ceramic Society ; GKD-ID: 6113X Journal of the American Ceramic Society Oxford [u.a.] : Wiley-Blackwell, 1918 83(2000), 1, Seite 0 Online-Ressource (DE-627)NLEJ243927835 (DE-600)2008170-4 1551-2916 nnns volume:83 year:2000 number:1 pages:0 http://dx.doi.org/10.1111/j.1151-2916.2000.tb01154.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 83 2000 1 0 |
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10.1111/j.1151-2916.2000.tb01154.x doi (DE-627)NLEJ243475276 DE-627 ger DE-627 rakwb Templeton, Alan verfasserin aut Microwave Dielectric Loss of Titanium Oxide Westerville, Ohio American Ceramics Society 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| Titanium oxide Wang, Xiaoru verfasserin aut Penn, Stuart J. verfasserin aut Webb, Stephen J. oth Cohen, Lesley F. oth Alford, Neil McN. oth In American Ceramic Society ; GKD-ID: 6113X Journal of the American Ceramic Society Oxford [u.a.] : Wiley-Blackwell, 1918 83(2000), 1, Seite 0 Online-Ressource (DE-627)NLEJ243927835 (DE-600)2008170-4 1551-2916 nnns volume:83 year:2000 number:1 pages:0 http://dx.doi.org/10.1111/j.1151-2916.2000.tb01154.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 83 2000 1 0 |
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10.1111/j.1151-2916.2000.tb01154.x doi (DE-627)NLEJ243475276 DE-627 ger DE-627 rakwb Templeton, Alan verfasserin aut Microwave Dielectric Loss of Titanium Oxide Westerville, Ohio American Ceramics Society 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| Titanium oxide Wang, Xiaoru verfasserin aut Penn, Stuart J. verfasserin aut Webb, Stephen J. oth Cohen, Lesley F. oth Alford, Neil McN. oth In American Ceramic Society ; GKD-ID: 6113X Journal of the American Ceramic Society Oxford [u.a.] : Wiley-Blackwell, 1918 83(2000), 1, Seite 0 Online-Ressource (DE-627)NLEJ243927835 (DE-600)2008170-4 1551-2916 nnns volume:83 year:2000 number:1 pages:0 http://dx.doi.org/10.1111/j.1151-2916.2000.tb01154.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 83 2000 1 0 |
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| abstract |
The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. |
| abstractGer |
The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. |
| abstract_unstemmed |
The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. The tan δ for all the high-Q doped TiO2 polycrystalline samples smoothly decrease to ∼5 × 10−6 (Q∼ 200 000) at 15 K, comparable to that of single crystals. |
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Microwave Dielectric Loss of Titanium Oxide |
| url |
http://dx.doi.org/10.1111/j.1151-2916.2000.tb01154.x |
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true |
| author2 |
Wang, Xiaoru Penn, Stuart J. Webb, Stephen J. Cohen, Lesley F. Alford, Neil McN |
| author2Str |
Wang, Xiaoru Penn, Stuart J. Webb, Stephen J. Cohen, Lesley F. Alford, Neil McN |
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NLEJ243927835 |
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oth oth oth |
| doi_str |
10.1111/j.1151-2916.2000.tb01154.x |
| up_date |
2024-07-06T05:34:43.081Z |
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1803806659660742656 |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ243475276</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707181606.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">120427s2000 xx |||||o 00| ||und c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1111/j.1151-2916.2000.tb01154.x</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ243475276</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Templeton, Alan</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Microwave Dielectric Loss of Titanium Oxide</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Westerville, Ohio</subfield><subfield code="b">American Ceramics Society</subfield><subfield code="c">2000</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The dielectric loss (tan δ) of titanium dioxide (TiO2) disks has been measured at a frequency of 3 GHz. High-purity TiO2 sintered to almost-full density exhibits a very high tan δ, which is interpreted to be due to oxygen deficiency. To counter this, doping with stable divalent and trivalent cations, such as Mg and Al, leads to a low tan δ, probably by preventing Ti4+ reduction. The tan δ of polycrystalline TiO2 doped with divalent and trivalent ions with ionic radii in the range of 0.5–0.95 Å at 3 GHz can be very low: 6 × 10−5 (Q∼ 17 000) at a temperature of 300 K. The tan δ of undoped pure TiO2 disks increases when the disks are cooled from 300 K to ∼100 K. At temperatures <100 K, the tan δ decreases rapidly, which is interpreted as carrier freeze-out. 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