Preparation of the CrO2 thin films using a Cr8O 21 precursor

Y. Muraoka; K. Iwai; S. Yoshida; T. Wakita; M. Hirai; T. Yokoya; Y. Kato; T. Muro; Y. Tamenori

doi:10.1557/opl.2011.154

Preparation of the CrO₂ thin films using a Cr₈O ₂₁ precursor

Y. Muraoka, K. Iwai, S. Yoshida, T. Wakita, M. Hirai, T. Yokoya, Y. Kato, T. Muro, Y. Tamenori

Research Institute for Interdisciplinary Science

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

1 Citation (Scopus)

Abstract

We have prepared a CrO₂ thin film by chemical vapor deposition from a Cr₈O₂₁ precursor and studied the bulk and surface physical properties. The CrO₂ thin film is grown on TiO ₂(100) substrate by heating precursor and TiO₂ (100) substrate together in a sealed quartz tube. The prepared film is found from x-ray diffraction analysis to be an (100)-oriented single phase. The magnetization and resistivity measurements indicate that the film is a ferromagnetic metal with a Curie temperature of about 400 K. Cr 3s core-level and valence band photoelectron spectroscopy spectra reveal the presence of a metallic CrO₂ in the surface region of the film. Our work indicates that preparation from a Cr₈O₂₁ precursor in a closed system is promising for obtaining a CrO₂ thin film with the metallic surface.

Original language	English
Title of host publication	Oxide Nanoelectronics
Pages	87-92
Number of pages	6
DOIs	https://doi.org/10.1557/opl.2011.154
Publication status	Published - 2011
Event	2010 MRS Fall Meeting - Boston, MA, United States Duration: Nov 29 2010 → Dec 3 2010

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1292
ISSN (Print)	0272-9172

Other

Other	2010 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	11/29/10 → 12/3/10

ASJC Scopus subject areas

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

Access to Document

10.1557/opl.2011.154

Cite this

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title = "Preparation of the CrO2 thin films using a Cr8O 21 precursor",

abstract = "We have prepared a CrO2 thin film by chemical vapor deposition from a Cr8O21 precursor and studied the bulk and surface physical properties. The CrO2 thin film is grown on TiO 2(100) substrate by heating precursor and TiO2 (100) substrate together in a sealed quartz tube. The prepared film is found from x-ray diffraction analysis to be an (100)-oriented single phase. The magnetization and resistivity measurements indicate that the film is a ferromagnetic metal with a Curie temperature of about 400 K. Cr 3s core-level and valence band photoelectron spectroscopy spectra reveal the presence of a metallic CrO2 in the surface region of the film. Our work indicates that preparation from a Cr8O21 precursor in a closed system is promising for obtaining a CrO2 thin film with the metallic surface.",

author = "Y. Muraoka and K. Iwai and S. Yoshida and T. Wakita and M. Hirai and T. Yokoya and Y. Kato and T. Muro and Y. Tamenori",

note = "Funding Information: The authors thank J. Takada and T. Fujii for XRD measurements, N. Hanasaki for resistivity measurements, and Z. Hiroi, K. Oshima and T. Kambe for magnetization measurements. The photoemission experiment at SPring-8 was performed with the approval of Japan Synchrotron Radiation Research Institute (Proposal No. 2009A1352). This research was supported by JST, CREST and The Ministry of Education, Culture, Sports, Science and Technology, Japan.; 2010 MRS Fall Meeting ; Conference date: 29-11-2010 Through 03-12-2010",

year = "2011",

doi = "10.1557/opl.2011.154",

language = "English",

isbn = "9781605112695",

series = "Materials Research Society Symposium Proceedings",

pages = "87--92",

booktitle = "Oxide Nanoelectronics",

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TY - GEN

T1 - Preparation of the CrO2 thin films using a Cr8O 21 precursor

AU - Muraoka, Y.

AU - Iwai, K.

AU - Yoshida, S.

AU - Wakita, T.

AU - Hirai, M.

AU - Yokoya, T.

AU - Kato, Y.

AU - Muro, T.

AU - Tamenori, Y.

N1 - Funding Information: The authors thank J. Takada and T. Fujii for XRD measurements, N. Hanasaki for resistivity measurements, and Z. Hiroi, K. Oshima and T. Kambe for magnetization measurements. The photoemission experiment at SPring-8 was performed with the approval of Japan Synchrotron Radiation Research Institute (Proposal No. 2009A1352). This research was supported by JST, CREST and The Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2011

Y1 - 2011

N2 - We have prepared a CrO2 thin film by chemical vapor deposition from a Cr8O21 precursor and studied the bulk and surface physical properties. The CrO2 thin film is grown on TiO 2(100) substrate by heating precursor and TiO2 (100) substrate together in a sealed quartz tube. The prepared film is found from x-ray diffraction analysis to be an (100)-oriented single phase. The magnetization and resistivity measurements indicate that the film is a ferromagnetic metal with a Curie temperature of about 400 K. Cr 3s core-level and valence band photoelectron spectroscopy spectra reveal the presence of a metallic CrO2 in the surface region of the film. Our work indicates that preparation from a Cr8O21 precursor in a closed system is promising for obtaining a CrO2 thin film with the metallic surface.

AB - We have prepared a CrO2 thin film by chemical vapor deposition from a Cr8O21 precursor and studied the bulk and surface physical properties. The CrO2 thin film is grown on TiO 2(100) substrate by heating precursor and TiO2 (100) substrate together in a sealed quartz tube. The prepared film is found from x-ray diffraction analysis to be an (100)-oriented single phase. The magnetization and resistivity measurements indicate that the film is a ferromagnetic metal with a Curie temperature of about 400 K. Cr 3s core-level and valence band photoelectron spectroscopy spectra reveal the presence of a metallic CrO2 in the surface region of the film. Our work indicates that preparation from a Cr8O21 precursor in a closed system is promising for obtaining a CrO2 thin film with the metallic surface.

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DO - 10.1557/opl.2011.154

M3 - Conference contribution

AN - SCOPUS:80053185349

SN - 9781605112695

T3 - Materials Research Society Symposium Proceedings

SP - 87

EP - 92

BT - Oxide Nanoelectronics

T2 - 2010 MRS Fall Meeting

Y2 - 29 November 2010 through 3 December 2010

ER -