Spontaneous formation of semiconductor/insulator superlattice thin film using Dynamic Aurora PLD and its large thermoelectric property

• Project/Area Number: 15H04123
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Shizuoka University
• Principal Investigator: Wakiya Naoki 静岡大学, 電子工学研究所, 教授 (40251623)
• Co-Investigator(Kenkyū-buntansha): 鈴木 久男 静岡大学, 電子工学研究所, 教授 (70154573) ; 坂元 尚紀 静岡大学, 電子工学研究所, 准教授 (80451996)
• Co-Investigator(Renkei-kenkyūsha): SHINOZAKI Kazuo 東京工業大学, 理工学研究科, 教授 (00196388)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000); Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2015: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
• Keywords: ダイナミックオーロラPLD / スピノーダル分解 / 自発的超格子構造生成 / エピタキシャル成長 / 熱電特性 / 酸化物 / 薄膜 / 自発的超格子生成 / 酸化物薄膜 / セラミックス / ナノ材料 / エピタキシャル / 自己組織化 / 熱電 / 磁場中PLD

Outline of Final Research Achievements

Using a “Dynamic Aurora PLD” we deposited La or Nb-doped strontium titanate or lanthanum strontium cobalt oxide thin film on strontium titanate single crystal substrate, and found out spontaneous superlattice formations. For these thin films, it was clarified that the figure of merit of thermoelectric properties increases with decreasing the superlattice period. This phenomenon suggests that the thin films are approaching to the 2-dimensional electron gas structure by decreasing the thick ness of spontaneously formed carrier doped layer. These results are in good agreement with the previous reports of artificial superlattice.

Research Products

• [Int'l Joint Research] 原子力エネルギーセンター(バングラデシュ)
• [Int'l Joint Research] SRM大学(インド)
• [Int'l Joint Research] 原子力エネルギーセンター(バングラデシュ)
• [Journal Article] Controlled synthesis of dense MgFe 2 O 4 nanospheres by ultrasonic spray pyrolysis technique: Effect of ethanol addition to precursor solvent (2018)
  • Author(s): Das Harinarayan、Debnath Nipa、Toda Atsuki、Kawaguchi Takahiko、Sakamoto Naonori、Manjura Hoque Sheikh、Shinozaki Kazuo、Suzuki Hisao、Wakiya Naoki
  • Journal Title: Advanced Powder Technology Volume: 29 Issue: 2 Pages: 283-288
  • DOI: 10.1016/j.apt.2017.11.014
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Preparation of free-standing multilayer hemispherical shell thin film using monodisperse polymer template (2018)
  • Author(s): Sridevi Meenachisundaram, Takahiko Kawaguchi, Ryo Usami, Naonori Sakamoto, Kazuo Shinozaki, Muthamizhchelvan Chellamuthu, Ponnusamy Suruttaiya U., Hisao Suzuki, Naoki Wakiya
  • Journal Title: J. Alloy Compd. Volume: 730 Pages: 369-375
  • DOI: 10.1016/j.jallcom.2017.09.290
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Influence of crystallite size on the magnetic and heat generation properties of La0.77Sr0.23MnO3 nanoparticles for hyperthermia applications (2018)
  • Author(s): Harinarayan Das, Akihiro Inukai, Nipa Debnath, Takahiko Kawaguchi, Naonori Sakamoto, Sheikh Manjura Hoque, Hiromichi Aono, Kazuo Shinozaki, Hisao Suzuki, Naoki Wakiya
  • Journal Title: J. Phys. Chem. Solids Volume: 112 Pages: 179-184
  • DOI: 10.1016/j.jpcs.2017.09.030
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Charge Screening Strategy for Domain Pattern Control in Nano-scale Ferroelectric Systems (2017)
  • Author(s): T. Yamada, D. Ito, T. Sluka, O. Sakata, H. Tanaka, H. Funakubo, T. Namazu, N. Wakiya, M. Yoshino, T. Nagasaki, and N. Setter
  • Journal Title: Sci. Rep. Volume: 7 Issue: 1 Pages: 5236-5236
  • DOI: 10.1038/s41598-017-05475-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Impact of precursor solution concentration to form superparamagnetic MgFe2O4 nanospheres by ultrasonic spray pyrolysis technique for magnetic thermotherapy (2017)
  • Author(s): Harinarayan Das, Nipa Debnath, Atsushi Toda, Takahiko Kawaguchi, Naonori Sakamoto, Hiromichi Aono, Kazuo Shinozaki, Hisao Suzuki, Naoki Wakiya
  • Journal Title: Adv. Powder Technol. Volume: 28 Issue: 7 Pages: 1696-1703
  • DOI: 10.1016/j.apt.2017.04.007
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Progress and impact of magnetic field application during pulsed laser deposition (PLD) on ceramic thin films (2017)
  • Author(s): Naoki Wakiya, Takahiko Kawaguchi, Naonori Sakamoto, Harinarayan Das, Kazuo Shinozaki, Hisao Suzuki
  • Journal Title: Journal of the Ceramic Society of Japan Volume: 125 Issue: 12 Pages: 856-865
  • DOI: 10.2109/jcersj2.17150
  • NAID: 130006235877
  • ISSN: 1348-6535, 1882-0743
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] As-grown enhancement of spinodal decomposition in spinel cobalt ferrite thin films by Dynamic Aurora pulsed laser deposition (2017)
  • Author(s): Nipa Debnath, Takahiko Kawaguchi, Wataru Kumasaka, Harinarayan Das, Kazuo Shinozaki, Naonori Sakamoto, Hisao Suzuki, Naoki Wakiya
  • Journal Title: J. Magn. Magn. Mater. Volume: 432 Pages: 391-395
  • DOI: 10.1016/j.jmmm.2017.02.023
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Magnetic-Field-Induced Spontaneous Superlattice Formation via Spinodal Decomposition in Epitaxial Strontium Titanate Thin Films (2016)
  • Author(s): Naoki Wakiya, Naonori Sakamoto, Shota Koda, Wataru Kumasaka, Debnath Nipa, Takahiko Kawaguchi, Takanori Kiguchi, Kazuo Shinozaki and Hisao Suzuki
  • Journal Title: NPG Asia Materials Volume: 8 Issue: 6 Pages: e279-e279
  • DOI: 10.1038/am.2016.76
  • NAID: 120006582522
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] ハイブリッド磁性微粒子の作製とハイパーサーミアへの応用 (2016)
  • Author(s): 脇谷尚樹、ダスハリナラヤン、川口昂彦、坂元尚紀、鈴木久男、青野宏通、篠崎和夫
  • Journal Title: 工業材料 Volume: 64 Pages: 36-41
• [Journal Article] Impact of acidic catalyst to coat superparamagnetic magnesium ferrite nanoparticles with silica shell via sol-gel approach (2016)
  • Author(s): H. Das, T. Arai, N. Debnath, N. Sakamoto, K. Shinozaki, H. Suzuki, N. Wakiya
  • Journal Title: Advanced Powder Technology Volume: 27 Issue: 2 Pages: 541-549
  • DOI: 10.1016/j.apt.2016.02.009
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Synthesis and electrical properties of Pb(Mg1/3Nb2/3)O3-PbTiO3 epitaxial thin films on Si wafers using chemical solution deposition (2016)
  • Author(s): Takashi Arai, Tomoya Ohno, Takeshi Matsuda, Naonori Sakamoto, Naoki Wakiya, Hisao Suzuki
  • Journal Title: Thin Solid Films Volume: 603 Pages: 97-102
  • DOI: 10.1016/j.tsf.2016.01.058
  • Peer Reviewed
• [Journal Article] Investigations of superparamagnetism in magnesium ferrite nanosphere synthesized by ultrasonic spray pyrolysis technique for hyperthermia application (2015)
  • Author(s): Harinarayan Das, Naonori Sakamoto, Hiromichi Aono, Kazuo Shinozaki, Hisao Suzuki, Naoki Wakiya
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 392 Pages: 91-100
  • DOI: 10.1016/j.jmmm.2015.05.029
  • Peer Reviewed
• [Journal Article] Effects of synthesis conditions on electrical properties of chemical solution deposition-derived Pb(Mg1/3Nb2/3)O3-PbTiO3 thin films (2015)
  • Author(s): Takeshi Arai, Tomoya Ohno, Takeshi Matsuda, Naonori Sakamoto, Naoki Wakiya, Hisao Suzuki
  • Journal Title: Thin Solid Films Volume: 585 Pages: 86-90
  • DOI: 10.1016/j.tsf.2014.11.014
  • Peer Reviewed
• [Presentation] ダイナミックオーロラPLD法による酸化物薄膜の微構造・機能制御 (2017)
  • Author(s): 脇谷尚樹
  • Organizer: 日本セラミックス協会 2017年年会
  • Place of Presentation: 日本大学 駿河台キャンパス（東京都千代田区）
  • Year and Date: 2017-03-17
  • Invited
• [Presentation] Magnetic-field-induced phase separation in manganese ferrite thin films grown by "Dynamic Aurora PLD" (2017)
  • Author(s): Nipa Debnath, Wataru Kumasaka, Takahiko Kawaguchi, Kazuo Shinozaki, Naonori Sakamoto, Hizao Suzuki, Naoki Wakiya
  • Organizer: 日本セラミックス協会 2017年年会
  • Place of Presentation: 日本大学 駿河台キャンパス（東京都千代田区）
  • Year and Date: 2017-03-17
• [Presentation] Magnetic-field-induced phase separation by Dynamic Aurora PLD (2017)
  • Author(s): Naoki Wakiya, Nipa Debnath, Takahiko Kawaguchi, Shogo Suzuki, Naonori Sakamoto, Kazuo Shinozaki, Hisao Suzuki
  • Organizer: 2017 China forum on magnetic materials and application technology
  • Int'l Joint Research / Invited
• [Presentation] Lattice Mismatch Design for Creation of Novel Buffer Layer which Enables Direct Epitaxial Growth of Perovskite Type Compounds on Si(001) (2017)
  • Author(s): Naoki Wakiya, Eiji Hamada, Takahiko Kawaguchi, Naonori Sakamoto, Kazuo Shinozaki, Hisao Suzuki
  • Organizer: ICONN2017
  • Int'l Joint Research / Invited
• [Presentation] Magnetic-field-induced Phase Separation in Ceramic Thin Films by Dynamic Aurora PLD (2017)
  • Author(s): Naoki Wakiya, Nipa Debnath, Takahiko Kawaguchi, Kazuo Shinozaki, Naonori Sakamoto, Hisao Suzuki
  • Organizer: ICMAT2017
  • Int'l Joint Research / Invited
• [Presentation] Effect of in-situ magnetic properties of manganese ferrite thin film grown by PLD technique (2016)
  • Author(s): Nipa Debnath, Wataru Kumasaka, Takahiko Kawaguchi, Kazuo Shinozaki, Naonori Sakamoto, Hizao Suzuki, Naoki Wakiya
  • Organizer: Inter Academia 2016
  • Place of Presentation: ワルシャワ工科大学（ポーランド）
  • Year and Date: 2016-09-26
  • Int'l Joint Research
• [Presentation] Magnetic field induced effect on structural and magnetic properties of manganese ferrite thin films deposited by “Dynamic Aurora PLD”method (2016)
  • Author(s): Nipa Debnath, Wataru Kumasaka, Takahiko Kawaguchi, Kazuo Shinozaki, Naonori Sakamoto, Hizao Suzuki, Naoki Wakiya
  • Organizer: 日本セラミックス協会 第29回秋季シンポジウム
  • Place of Presentation: 広島大学 東広島キャンパス（広島県東広島市）
  • Year and Date: 2016-09-07
• [Presentation] The effect of dopingh on the spontaneous superlattice formation in strontium titante thin film (2015)
  • Author(s): Naoki Wakiya, Naonori Sakamoto, Tomoaki Kubota, Takanori Kiguchi, Kazuo Shinozaki, Hisao Suzuki
  • Organizer: IUMRS-ICAM2015
  • Place of Presentation: 済州島（韓国）
  • Year and Date: 2015-10-25
  • Int'l Joint Research / Invited
• [Book] セラミックデータブック2017：ダイナミックオーロラPLD法による自発的な超格子構造の生成 (2017)
  • Author(s): 脇谷尚樹, 川口昂彦, 坂元尚紀, 篠崎和夫, 鈴木久男
  • Total Pages: 164
  • Publisher: 工業製品技術協会