Oxide formation during flight of ablated fragments

Osamu Eryu; Kenji Yamaoka; Kohzoh Masuda

Oxide formation during flight of ablated fragments

Osamu Eryu, Kenji Yamaoka, Kohzoh Masuda

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Collision processes between oxygen molecules and laser ablated fragments from YBa₂Cu₃O_y superconductor target are described. The space/time resolved photo-emission measurements of Cu and CuO were carried out in order to investigate the oxidation of the laser ablated fragments in O₂ atmosphere. Increase of the photo-emission yield of CuO was observed over 100 mTorr and it showed maximum at 2 Torr. Velocity of CuO decreases abruptly at 200 mTorr. The velocity distribution spreads above 500 mTorr. An optimum range of oxygen pressure to fabricate superconducting thin films of T_c = 90 K was from 250 mTorr to 500 mTorr. Process of the reactive collisions of ablated fragments with O₂ molecules in this range is discussed.

Original language	English
Title of host publication	Materials Research Society Symposium Proceedings
Publisher	Publ by Materials Research Society
Pages	57-61
Number of pages	5
ISBN (Print)	1558991808
Publication status	Published - 1993
Externally published	Yes
Event	Laser Ablation in Materials Processing: Fundamentals and Applications - Boston, MA, USA Duration: 01-12-1992 → 04-12-1992

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	285
ISSN (Print)	0272-9172

Conference

Conference	Laser Ablation in Materials Processing: Fundamentals and Applications
City	Boston, MA, USA
Period	01-12-92 → 04-12-92

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

@inproceedings{974857de3ea74a1db290887b95fa2d2a,

title = "Oxide formation during flight of ablated fragments",

abstract = "Collision processes between oxygen molecules and laser ablated fragments from YBa2Cu3Oy superconductor target are described. The space/time resolved photo-emission measurements of Cu and CuO were carried out in order to investigate the oxidation of the laser ablated fragments in O2 atmosphere. Increase of the photo-emission yield of CuO was observed over 100 mTorr and it showed maximum at 2 Torr. Velocity of CuO decreases abruptly at 200 mTorr. The velocity distribution spreads above 500 mTorr. An optimum range of oxygen pressure to fabricate superconducting thin films of Tc = 90 K was from 250 mTorr to 500 mTorr. Process of the reactive collisions of ablated fragments with O2 molecules in this range is discussed.",

author = "Osamu Eryu and Kenji Yamaoka and Kohzoh Masuda",

year = "1993",

language = "English",

isbn = "1558991808",

series = "Materials Research Society Symposium Proceedings",

publisher = "Publ by Materials Research Society",

pages = "57--61",

booktitle = "Materials Research Society Symposium Proceedings",

note = "Laser Ablation in Materials Processing: Fundamentals and Applications ; Conference date: 01-12-1992 Through 04-12-1992",

}

TY - GEN

T1 - Oxide formation during flight of ablated fragments

AU - Eryu, Osamu

AU - Yamaoka, Kenji

AU - Masuda, Kohzoh

PY - 1993

Y1 - 1993

N2 - Collision processes between oxygen molecules and laser ablated fragments from YBa2Cu3Oy superconductor target are described. The space/time resolved photo-emission measurements of Cu and CuO were carried out in order to investigate the oxidation of the laser ablated fragments in O2 atmosphere. Increase of the photo-emission yield of CuO was observed over 100 mTorr and it showed maximum at 2 Torr. Velocity of CuO decreases abruptly at 200 mTorr. The velocity distribution spreads above 500 mTorr. An optimum range of oxygen pressure to fabricate superconducting thin films of Tc = 90 K was from 250 mTorr to 500 mTorr. Process of the reactive collisions of ablated fragments with O2 molecules in this range is discussed.

AB - Collision processes between oxygen molecules and laser ablated fragments from YBa2Cu3Oy superconductor target are described. The space/time resolved photo-emission measurements of Cu and CuO were carried out in order to investigate the oxidation of the laser ablated fragments in O2 atmosphere. Increase of the photo-emission yield of CuO was observed over 100 mTorr and it showed maximum at 2 Torr. Velocity of CuO decreases abruptly at 200 mTorr. The velocity distribution spreads above 500 mTorr. An optimum range of oxygen pressure to fabricate superconducting thin films of Tc = 90 K was from 250 mTorr to 500 mTorr. Process of the reactive collisions of ablated fragments with O2 molecules in this range is discussed.

UR - https://www.scopus.com/pages/publications/0027152399

UR - https://www.scopus.com/inward/citedby.url?scp=0027152399&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0027152399

SN - 1558991808

T3 - Materials Research Society Symposium Proceedings

SP - 57

EP - 61

BT - Materials Research Society Symposium Proceedings

PB - Publ by Materials Research Society

T2 - Laser Ablation in Materials Processing: Fundamentals and Applications

Y2 - 1 December 1992 through 4 December 1992

ER -

Oxide formation during flight of ablated fragments

Abstract

Publication series

Conference

All Science Journal Classification (ASJC) codes

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