Emission characteristics of negative oxygen ions into vacuum from cerium oxide

Takaaki Sakai, Yukio Fujiwara, Atsushi Kaimai, Keiji Yashiro, Hiroshige Matsumoto, Yutaka Nigara, Tatsuya Kawada, Junichiro Mizusaki

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

The oxygen ion emission characteristics of CeO2 were studied under electric field in a vacuum chamber to find a candidate material for a novel ion source, "solid oxide ion source (SOIS)". The emission current was observed from CeO2 under a pressure of around 10 -3 Pa, at the temperature ranging from 973 K to 1173 K. It was found that the emission current increased with temperature and applied voltage. The ions emitted from CeO2 were confirmed to be oxygen negative ions (O-) by the use of quadrupole mass spectrometer. The emission current decreased with time as was observed in the earlier works with other oxide ion conductors such as stabilized zirconia [1,2] or other materials [3]. To enhance the emission current from CeO2, an introduction of donor into CeO2 was tested using Ce0.992Nb0.008O 2. For comparison, effect of acceptor doping was also tested using Ce0.9Gd0.1O1.95. The emission current from Ce0.9Gd0.1O1.95 was smaller than that from donor-doped and pure CeO2. Clear enhancement of the emission current was not observed with Ce0.992Nb0.008O2.

Original languageEnglish
Pages (from-to)1127-1131
Number of pages5
JournalJournal of Alloys and Compounds
Volume408-412
DOIs
Publication statusPublished - Feb 9 2006
EventProceedings of the Rare Earths'04 in Nara, Japan -
Duration: Nov 7 2004Nov 12 2004

Fingerprint

Cerium
Vacuum
Ion sources
Ions
Oxygen
Oxides
Mass spectrometers
Zirconia
Negative ions
Electric fields
Doping (additives)
Temperature
Electric potential
ceric oxide

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Emission characteristics of negative oxygen ions into vacuum from cerium oxide. / Sakai, Takaaki; Fujiwara, Yukio; Kaimai, Atsushi; Yashiro, Keiji; Matsumoto, Hiroshige; Nigara, Yutaka; Kawada, Tatsuya; Mizusaki, Junichiro.

In: Journal of Alloys and Compounds, Vol. 408-412, 09.02.2006, p. 1127-1131.

Research output: Contribution to journalConference article

Sakai, T, Fujiwara, Y, Kaimai, A, Yashiro, K, Matsumoto, H, Nigara, Y, Kawada, T & Mizusaki, J 2006, 'Emission characteristics of negative oxygen ions into vacuum from cerium oxide', Journal of Alloys and Compounds, vol. 408-412, pp. 1127-1131. https://doi.org/10.1016/j.jallcom.2004.12.125
Sakai, Takaaki ; Fujiwara, Yukio ; Kaimai, Atsushi ; Yashiro, Keiji ; Matsumoto, Hiroshige ; Nigara, Yutaka ; Kawada, Tatsuya ; Mizusaki, Junichiro. / Emission characteristics of negative oxygen ions into vacuum from cerium oxide. In: Journal of Alloys and Compounds. 2006 ; Vol. 408-412. pp. 1127-1131.
@article{8211c9d9b80747c3bab10056ba05f2fd,
title = "Emission characteristics of negative oxygen ions into vacuum from cerium oxide",
abstract = "The oxygen ion emission characteristics of CeO2 were studied under electric field in a vacuum chamber to find a candidate material for a novel ion source, {"}solid oxide ion source (SOIS){"}. The emission current was observed from CeO2 under a pressure of around 10 -3 Pa, at the temperature ranging from 973 K to 1173 K. It was found that the emission current increased with temperature and applied voltage. The ions emitted from CeO2 were confirmed to be oxygen negative ions (O-) by the use of quadrupole mass spectrometer. The emission current decreased with time as was observed in the earlier works with other oxide ion conductors such as stabilized zirconia [1,2] or other materials [3]. To enhance the emission current from CeO2, an introduction of donor into CeO2 was tested using Ce0.992Nb0.008O 2. For comparison, effect of acceptor doping was also tested using Ce0.9Gd0.1O1.95. The emission current from Ce0.9Gd0.1O1.95 was smaller than that from donor-doped and pure CeO2. Clear enhancement of the emission current was not observed with Ce0.992Nb0.008O2.",
author = "Takaaki Sakai and Yukio Fujiwara and Atsushi Kaimai and Keiji Yashiro and Hiroshige Matsumoto and Yutaka Nigara and Tatsuya Kawada and Junichiro Mizusaki",
year = "2006",
month = "2",
day = "9",
doi = "10.1016/j.jallcom.2004.12.125",
language = "English",
volume = "408-412",
pages = "1127--1131",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Emission characteristics of negative oxygen ions into vacuum from cerium oxide

AU - Sakai, Takaaki

AU - Fujiwara, Yukio

AU - Kaimai, Atsushi

AU - Yashiro, Keiji

AU - Matsumoto, Hiroshige

AU - Nigara, Yutaka

AU - Kawada, Tatsuya

AU - Mizusaki, Junichiro

PY - 2006/2/9

Y1 - 2006/2/9

N2 - The oxygen ion emission characteristics of CeO2 were studied under electric field in a vacuum chamber to find a candidate material for a novel ion source, "solid oxide ion source (SOIS)". The emission current was observed from CeO2 under a pressure of around 10 -3 Pa, at the temperature ranging from 973 K to 1173 K. It was found that the emission current increased with temperature and applied voltage. The ions emitted from CeO2 were confirmed to be oxygen negative ions (O-) by the use of quadrupole mass spectrometer. The emission current decreased with time as was observed in the earlier works with other oxide ion conductors such as stabilized zirconia [1,2] or other materials [3]. To enhance the emission current from CeO2, an introduction of donor into CeO2 was tested using Ce0.992Nb0.008O 2. For comparison, effect of acceptor doping was also tested using Ce0.9Gd0.1O1.95. The emission current from Ce0.9Gd0.1O1.95 was smaller than that from donor-doped and pure CeO2. Clear enhancement of the emission current was not observed with Ce0.992Nb0.008O2.

AB - The oxygen ion emission characteristics of CeO2 were studied under electric field in a vacuum chamber to find a candidate material for a novel ion source, "solid oxide ion source (SOIS)". The emission current was observed from CeO2 under a pressure of around 10 -3 Pa, at the temperature ranging from 973 K to 1173 K. It was found that the emission current increased with temperature and applied voltage. The ions emitted from CeO2 were confirmed to be oxygen negative ions (O-) by the use of quadrupole mass spectrometer. The emission current decreased with time as was observed in the earlier works with other oxide ion conductors such as stabilized zirconia [1,2] or other materials [3]. To enhance the emission current from CeO2, an introduction of donor into CeO2 was tested using Ce0.992Nb0.008O 2. For comparison, effect of acceptor doping was also tested using Ce0.9Gd0.1O1.95. The emission current from Ce0.9Gd0.1O1.95 was smaller than that from donor-doped and pure CeO2. Clear enhancement of the emission current was not observed with Ce0.992Nb0.008O2.

UR - http://www.scopus.com/inward/record.url?scp=31344439288&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=31344439288&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2004.12.125

DO - 10.1016/j.jallcom.2004.12.125

M3 - Conference article

AN - SCOPUS:31344439288

VL - 408-412

SP - 1127

EP - 1131

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -