Potential of Nd:YAG pulsed laser deposition method for coated conductor production

Yoshida, Yutaka; Yoshimura, Takuya; Takai, Yoshiaki; Yoshizumi, M.; Izumi, Teruo; Shiohara, Yuh

doi:10.1016/j.physc.2010.05.082

Cited by 10 publications

(9 citation statements)

References 14 publications

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“…Yoshizumi have shown that YBCO films fabricated by the Nd:YAG-PLD method have yielded good superconducting properties; for example, and at 77 K on MgO single crystalline substrates and metal substrates with oxide buffer layers textured by the ion beam assisted deposition (IBAD) method [1], [2]. Similar results have been reported by another group as well [3].…”

Section: Introductionsupporting

confidence: 59%

Possibility of Nd:YAG-PLD Method for Fabricating REBCO Coated Conductors

Yoshida

Yoshimura

Ono

et al. 2011

IEEE Trans. Appl. Supercond.

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A Nd:YAG (neodymium-doped yttrium aluminum garnet) laser is environmentally safe, due to the absence of any poisonous or hazardous gases, and also economical, without the need for expensive gases. We can thus expect a safe and low cost REBa 2 Cu 3 O (REBCO)-coated conductor fabrication process by using an Nd:YAG laser. We investigated the fabrication of YBa 2 Cu 3 O (YBCO) films using a PLD method with a fourth harmonic Nd:YAG laser. The YBCO films showed good superconducting properties; for example, on SrTiO 3 single crystalline substrates, c and c were about 90 K and 2.5 MA cm 2 , respectively, at 77 K. In order to enhance c in magnetic fields, BaSnO 3 was doped into YBCO films by means of a combinatorial Nd:YAG-PLD method. The combinatorial method enabled the growth and study of a library of samples ranging from pure-YBCO to BSO-doped-YBCO. We demonstrated rapid optimization ofBaSnO 3 content by the combinatorial method and concluded that the optimal BSO content was around 3.6 wt%. In addition, in order to enhance material yield of the Nd:YAG-PLD method, we optimized the oxygen pressure and distance between the target and substrate. On a substrate with dimensions of 10 10 mm 2 , the material yield of a YBCO film reached about 19.0%. These results suggest that the Nd:YAG-PLD method is promising for forming YBCO-coated conductors.

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Section: Introductionsupporting

confidence: 59%

Possibility of Nd:YAG-PLD Method for Fabricating REBCO Coated Conductors

Yoshida

Yoshimura

Ono

et al. 2011

IEEE Trans. Appl. Supercond.

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“…Pulsed laser deposition (PLD) has become a potential method in fabricating highly quality superconducting thin films suitable for electronic applications such as in Josephson junctionbased electronics and in second generation coated conductors [11,12,14,20,23]. PLD of high T c superconductors generally utilize excimer lasers in the ultraviolet (UV) range [6,11] .…”

Section: Introductionmentioning

confidence: 99%

“…Nd: YAG lasers are also easy to operate and have low maintenance costs [2,14,20]. To date, the third harmonic (355 nm) and fourth harmonic (266 nm) of the Nd:YAG has been used to grow high quality high-Tc superconducting films [12,14,20].…”

Section: Introductionmentioning

confidence: 99%

Post Deposition Heat Treatment Effects on Ceramic Superconducting Films Produced by Infrared Nd:YAG Pulsed Laser Deposition

Vero¹,

Lopez²,

Garcia³

et al. 2012

Heat Treatment - Conventional and Novel Applications

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“…Various parameters of the laser, target, and deposition conditions influence the quality of PLD films. The laser wavelength and energy density, nature of the target, and deposition time can be explored to achieve high-quality superconducting Bi-2212 films [1][2][3][4][5]. One of the challenges in PLD is the preservation of the stoichiometry between the target and the film.…”

mentioning

confidence: 99%

“…Pulsed laser deposition (PLD) has been extensively used in the fabrication of high-temperature superconductors such as Bi 2 Sr 2 CaCu2O 8+δ (Bi-2212) [1][2][3][4][5]. It is a flexible and straightforward technique effective in growing highly crystalline films with smooth surface morphology suitable for device applications [3,4].…”

mentioning

confidence: 99%

Stoichiometric transfer by infrared pulsed laser deposition of y-doped Bi–Sr–Ca–Cu–O investigated using time-resolved optical emission spectroscopy

et al. 2012

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0.30, and 0.49 on an MgO (100) substrate was conducted using a Q-switched 1064 nm Nd:YAG laser The laser-produced plasma (LPP) emission was collected during the deposition. Time-resolved optical emission spectroscopy reveals that the plasma plume consists of neutral atoms and ions. SEM images indicate that clusters of correct stoichiometry arrive on the substrate surface. Our result confirms that IR PLD transfers material stoichiometrically. Keywords: pulsed laser deposition, plasma diagnostic techniques and instrumentation.Introduction. Pulsed laser deposition (PLD) has been extensively used in the fabrication of high-temperature superconductors such as Bi 2 Sr 2 CaCu2O 8+δ (Bi-2212) [1][2][3][4][5]. It is a flexible and straightforward technique effective in growing highly crystalline films with smooth surface morphology suitable for device applications [3,4]. Various parameters of the laser, target, and deposition conditions influence the quality of PLD films. The laser wavelength and energy density, nature of the target, and deposition time can be explored to achieve high-quality superconducting Bi-2212 films [1][2][3][4][5]. One of the challenges in PLD is the preservation of the stoichiometry between the target and the film. This was resolved recently by using an IR pulsed laser as an excitation source in fabricating Bi-2212 films [6].Most publications in PLD focus on the characterization of the films [3-8]. Only few reports are given regarding the correlation between the plasma plume and the properties of the grown film. The laser-produced plasma (LPP) formed during the ablation process provides information on the characteristics of the particles being transferred to the film [9]. Previous studies showed the effect of energy fluence from the UV laser source on the dynamics of the plasma expansion and the stoichiometry of BSCCO films [10]. One of the methods used to determine the plasma parameters is time-resolved optical emission spectroscopy. The radiation emitted by the plasma is collected, monitored, and analyzed spectroscopically during the various stages of the plasma evolution [11]. This technique is an effective way to determine the composition and other properties of the LPP [9,12,13].In this paper, we investigate the different plasma parameters of laser-produced Y-doped BSCCO plasma using time-resolved optical emission spectroscopy. The optical emission spectra were simultaneously collected with the laser deposition of Bi 2 Sr 2 Ca 1-x YxCu2O 8+δ films using a 1064 nm Q-switched Nd:YAG laser. The surface morphology, atomic composition, and transition temperature of the films with different Y concentrations were evaluated in consideration of the LPP spectra.Experimental. PLD was conducted in a vacuum chamber at a pressure of 10 -2 mbar for 180 min. The

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Potential of Nd:YAG pulsed laser deposition method for coated conductor production

Cited by 10 publications

References 14 publications

Possibility of Nd:YAG-PLD Method for Fabricating REBCO Coated Conductors

Possibility of Nd:YAG-PLD Method for Fabricating REBCO Coated Conductors

Post Deposition Heat Treatment Effects on Ceramic Superconducting Films Produced by Infrared Nd:YAG Pulsed Laser Deposition

Stoichiometric transfer by infrared pulsed laser deposition of y-doped Bi–Sr–Ca–Cu–O investigated using time-resolved optical emission spectroscopy

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