The effects of substrate temperature and oxygen pressure on pulsed laser deposited Bi-substituted Dy iron garnet films

P Papakonstantinou, B Teggart, R Atkinson

Research output: Contribution to journalArticle

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Abstract

Polycrystalline thin films of highly Bi substituted Dy iron garnets, [(BixDy3−x(Fe, Ga)5O12], with [111] crystalline orientation perpendicular to the film plane were grown on (111) Gd3Ga5O12, single crystal substrates using pulsed laser deposition technique. In the deposited films, Bi stoichiometry was found to be very sensitive to both substrate temperature and oxygen pressure. The Bi volatilisation problem was relieved by depositing in a high background pressure of oxygen. The results demonstrated that high quality garnet films with large magneto-optical (MO) effects and square hysteresis loops could be obtained when the substrate temperature did not exceed 590°C and the oxygen pressure was kept in the neighbourhood of 0.2 mbar. The MO behaviour of these films compared well with predictions based on the fundamental constants of Bi substituted Yttrium Iron Garnet thick films, grown by liquid phase epitaxy. The coercivity could be varied from a few hundred Oe to several kOe by controlling the oxygen pressure and film thickness
LanguageEnglish
Pages378-392
JournalJournal of Magnetism and Magnetic Materials
Volume163
DOIs
Publication statusPublished - 3 Jun 1996

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garnets
pulsed lasers
iron
oxygen
vaporizing
temperature
liquid phase epitaxy
yttrium-iron garnet
pulsed laser deposition
thick films
coercivity
stoichiometry
film thickness
hysteresis
single crystals
thin films
predictions

Cite this

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title = "The effects of substrate temperature and oxygen pressure on pulsed laser deposited Bi-substituted Dy iron garnet films",
abstract = "Polycrystalline thin films of highly Bi substituted Dy iron garnets, [(BixDy3−x(Fe, Ga)5O12], with [111] crystalline orientation perpendicular to the film plane were grown on (111) Gd3Ga5O12, single crystal substrates using pulsed laser deposition technique. In the deposited films, Bi stoichiometry was found to be very sensitive to both substrate temperature and oxygen pressure. The Bi volatilisation problem was relieved by depositing in a high background pressure of oxygen. The results demonstrated that high quality garnet films with large magneto-optical (MO) effects and square hysteresis loops could be obtained when the substrate temperature did not exceed 590°C and the oxygen pressure was kept in the neighbourhood of 0.2 mbar. The MO behaviour of these films compared well with predictions based on the fundamental constants of Bi substituted Yttrium Iron Garnet thick films, grown by liquid phase epitaxy. The coercivity could be varied from a few hundred Oe to several kOe by controlling the oxygen pressure and film thickness",
author = "P Papakonstantinou and B Teggart and R Atkinson",
year = "1996",
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doi = "10.1016/S0304-8853(96)00398-8",
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The effects of substrate temperature and oxygen pressure on pulsed laser deposited Bi-substituted Dy iron garnet films. / Papakonstantinou, P; Teggart, B; Atkinson, R.

Vol. 163, 03.06.1996, p. 378-392.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The effects of substrate temperature and oxygen pressure on pulsed laser deposited Bi-substituted Dy iron garnet films

AU - Papakonstantinou, P

AU - Teggart, B

AU - Atkinson, R

PY - 1996/6/3

Y1 - 1996/6/3

N2 - Polycrystalline thin films of highly Bi substituted Dy iron garnets, [(BixDy3−x(Fe, Ga)5O12], with [111] crystalline orientation perpendicular to the film plane were grown on (111) Gd3Ga5O12, single crystal substrates using pulsed laser deposition technique. In the deposited films, Bi stoichiometry was found to be very sensitive to both substrate temperature and oxygen pressure. The Bi volatilisation problem was relieved by depositing in a high background pressure of oxygen. The results demonstrated that high quality garnet films with large magneto-optical (MO) effects and square hysteresis loops could be obtained when the substrate temperature did not exceed 590°C and the oxygen pressure was kept in the neighbourhood of 0.2 mbar. The MO behaviour of these films compared well with predictions based on the fundamental constants of Bi substituted Yttrium Iron Garnet thick films, grown by liquid phase epitaxy. The coercivity could be varied from a few hundred Oe to several kOe by controlling the oxygen pressure and film thickness

AB - Polycrystalline thin films of highly Bi substituted Dy iron garnets, [(BixDy3−x(Fe, Ga)5O12], with [111] crystalline orientation perpendicular to the film plane were grown on (111) Gd3Ga5O12, single crystal substrates using pulsed laser deposition technique. In the deposited films, Bi stoichiometry was found to be very sensitive to both substrate temperature and oxygen pressure. The Bi volatilisation problem was relieved by depositing in a high background pressure of oxygen. The results demonstrated that high quality garnet films with large magneto-optical (MO) effects and square hysteresis loops could be obtained when the substrate temperature did not exceed 590°C and the oxygen pressure was kept in the neighbourhood of 0.2 mbar. The MO behaviour of these films compared well with predictions based on the fundamental constants of Bi substituted Yttrium Iron Garnet thick films, grown by liquid phase epitaxy. The coercivity could be varied from a few hundred Oe to several kOe by controlling the oxygen pressure and film thickness

U2 - 10.1016/S0304-8853(96)00398-8

DO - 10.1016/S0304-8853(96)00398-8

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VL - 163

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EP - 392

ER -