Growth and electrical properties of Fe doped (Ba, Sr)TiO3 thin films deposited by pulsed laser deposition

Yoshiyuki Yonezawa; Megumi Kato; Yoshinori Konishi; Shizuyasu Yoshida; Nobuhiro Okuda; Takahiko Maeda; Ryohei Tanuma; Michio Ohsawa; Hideaki Matsuyama; Shinji Ogino; Naoto Fujishima; Akinori Matsuda; Noboru Furusyo; Toyohiro Chikyow; Masashi Kawasaki; Hideomi Koinuma

Growth and electrical properties of Fe doped (Ba, Sr)TiO₃ thin films deposited by pulsed laser deposition

Yoshiyuki Yonezawa, Megumi Kato, Yoshinori Konishi, Shizuyasu Yoshida, Nobuhiro Okuda, Takahiko Maeda, Ryohei Tanuma, Michio Ohsawa, Hideaki Matsuyama, Shinji Ogino, Naoto Fujishima, Akinori Matsuda, Noboru Furusyo, Toyohiro Chikyow, Masashi Kawasaki, Hideomi Koinuma

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Impurity effects were investigated in (Ba, Sr)TiO₃ (BST) systems in order to suppress leakage currents under relatively low oxygen pressure conditions by Pulsed Laser Deposition (PLD). We tried to dope transition metals, such as Mo, Mn, Cr, W and Fe into the BST target and used the targets to fabricate the films. By measuring electrical properties, we found Fe-doping had a significant effect on suppressing leakage current. Subsequently, we changed the amount of Fe doping from 0.1 mol% to 6%. As a result, with post annealing, the sample with Fe:4% showed the lowest leakage current among those analyzed. Even without post annealing, the sample with Fe:6% showed the lowest leakage current. As for the dielectric constants, they decreased as the doping increased. At most, a 30% reduction was observed, compared with non-doped BST. XANES (X-ray Absorption Near Edge Structures) results indicated that the valency of the Fe ion was 3+ and located at the B-site of BST.

Original language	English
Pages (from-to)	309-314
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	688
Publication status	Published - 2002 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Yonezawa, Y., Kato, M., Konishi, Y., Yoshida, S., Okuda, N., Maeda, T., Tanuma, R., Ohsawa, M., Matsuyama, H., Ogino, S., Fujishima, N., Matsuda, A., Furusyo, N., Chikyow, T., Kawasaki, M., & Koinuma, H. (2002). Growth and electrical properties of Fe doped (Ba, Sr)TiO₃ thin films deposited by pulsed laser deposition. Materials Research Society Symposium - Proceedings, 688, 309-314.

Growth and electrical properties of Fe doped (Ba, Sr)TiO₃ thin films deposited by pulsed laser deposition. / Yonezawa, Yoshiyuki; Kato, Megumi; Konishi, Yoshinori; Yoshida, Shizuyasu; Okuda, Nobuhiro; Maeda, Takahiko; Tanuma, Ryohei; Ohsawa, Michio; Matsuyama, Hideaki; Ogino, Shinji; Fujishima, Naoto; Matsuda, Akinori; Furusyo, Noboru; Chikyow, Toyohiro; Kawasaki, Masashi; Koinuma, Hideomi.

In: Materials Research Society Symposium - Proceedings, Vol. 688, 01.01.2002, p. 309-314.

Research output: Contribution to journal › Article › peer-review

Yonezawa, Y, Kato, M, Konishi, Y, Yoshida, S, Okuda, N, Maeda, T, Tanuma, R, Ohsawa, M, Matsuyama, H, Ogino, S, Fujishima, N, Matsuda, A, Furusyo, N, Chikyow, T, Kawasaki, M & Koinuma, H 2002, 'Growth and electrical properties of Fe doped (Ba, Sr)TiO₃ thin films deposited by pulsed laser deposition', Materials Research Society Symposium - Proceedings, vol. 688, pp. 309-314.

Yonezawa, Yoshiyuki ; Kato, Megumi ; Konishi, Yoshinori ; Yoshida, Shizuyasu ; Okuda, Nobuhiro ; Maeda, Takahiko ; Tanuma, Ryohei ; Ohsawa, Michio ; Matsuyama, Hideaki ; Ogino, Shinji ; Fujishima, Naoto ; Matsuda, Akinori ; Furusyo, Noboru ; Chikyow, Toyohiro ; Kawasaki, Masashi ; Koinuma, Hideomi. / Growth and electrical properties of Fe doped (Ba, Sr)TiO₃ thin films deposited by pulsed laser deposition. In: Materials Research Society Symposium - Proceedings. 2002 ; Vol. 688. pp. 309-314.

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abstract = "Impurity effects were investigated in (Ba, Sr)TiO3 (BST) systems in order to suppress leakage currents under relatively low oxygen pressure conditions by Pulsed Laser Deposition (PLD). We tried to dope transition metals, such as Mo, Mn, Cr, W and Fe into the BST target and used the targets to fabricate the films. By measuring electrical properties, we found Fe-doping had a significant effect on suppressing leakage current. Subsequently, we changed the amount of Fe doping from 0.1 mol% to 6%. As a result, with post annealing, the sample with Fe:4% showed the lowest leakage current among those analyzed. Even without post annealing, the sample with Fe:6% showed the lowest leakage current. As for the dielectric constants, they decreased as the doping increased. At most, a 30% reduction was observed, compared with non-doped BST. XANES (X-ray Absorption Near Edge Structures) results indicated that the valency of the Fe ion was 3+ and located at the B-site of BST.",

author = "Yoshiyuki Yonezawa and Megumi Kato and Yoshinori Konishi and Shizuyasu Yoshida and Nobuhiro Okuda and Takahiko Maeda and Ryohei Tanuma and Michio Ohsawa and Hideaki Matsuyama and Shinji Ogino and Naoto Fujishima and Akinori Matsuda and Noboru Furusyo and Toyohiro Chikyow and Masashi Kawasaki and Hideomi Koinuma",

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T1 - Growth and electrical properties of Fe doped (Ba, Sr)TiO3 thin films deposited by pulsed laser deposition

AU - Yonezawa, Yoshiyuki

AU - Kato, Megumi

AU - Konishi, Yoshinori

AU - Yoshida, Shizuyasu

AU - Okuda, Nobuhiro

AU - Maeda, Takahiko

AU - Tanuma, Ryohei

AU - Ohsawa, Michio

AU - Matsuyama, Hideaki

AU - Ogino, Shinji

AU - Fujishima, Naoto

AU - Matsuda, Akinori

AU - Furusyo, Noboru

AU - Chikyow, Toyohiro

AU - Kawasaki, Masashi

AU - Koinuma, Hideomi

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Impurity effects were investigated in (Ba, Sr)TiO3 (BST) systems in order to suppress leakage currents under relatively low oxygen pressure conditions by Pulsed Laser Deposition (PLD). We tried to dope transition metals, such as Mo, Mn, Cr, W and Fe into the BST target and used the targets to fabricate the films. By measuring electrical properties, we found Fe-doping had a significant effect on suppressing leakage current. Subsequently, we changed the amount of Fe doping from 0.1 mol% to 6%. As a result, with post annealing, the sample with Fe:4% showed the lowest leakage current among those analyzed. Even without post annealing, the sample with Fe:6% showed the lowest leakage current. As for the dielectric constants, they decreased as the doping increased. At most, a 30% reduction was observed, compared with non-doped BST. XANES (X-ray Absorption Near Edge Structures) results indicated that the valency of the Fe ion was 3+ and located at the B-site of BST.

AB - Impurity effects were investigated in (Ba, Sr)TiO3 (BST) systems in order to suppress leakage currents under relatively low oxygen pressure conditions by Pulsed Laser Deposition (PLD). We tried to dope transition metals, such as Mo, Mn, Cr, W and Fe into the BST target and used the targets to fabricate the films. By measuring electrical properties, we found Fe-doping had a significant effect on suppressing leakage current. Subsequently, we changed the amount of Fe doping from 0.1 mol% to 6%. As a result, with post annealing, the sample with Fe:4% showed the lowest leakage current among those analyzed. Even without post annealing, the sample with Fe:6% showed the lowest leakage current. As for the dielectric constants, they decreased as the doping increased. At most, a 30% reduction was observed, compared with non-doped BST. XANES (X-ray Absorption Near Edge Structures) results indicated that the valency of the Fe ion was 3+ and located at the B-site of BST.

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