Magnetic and optical properties of Zn1-xMn xO thin films prepared by pulsed laser deposition

Kyung Ah Jeon, Jong Hoon Kim, Wooyoung Shim, Wooyoung Lee, M. H. Jung, Sang Yeol Lee

Research output: Contribution to journalConference article

26 Citations (Scopus)

Abstract

We report on ferromagnetic characteristics of Zn1- xMnxO thin films grown on Al2O3 substrates by using pulsed laser deposition. The effects of oxygen pressure on the ferromagnetism in the Mn-doped ZnO thin films are discussed. The carrier concentration was found to be controlled by varying the oxygen pressure. By decreasing oxygen pressure, the films exhibited increases in both the lattice constant and fundamental band gap energy. Large magnetoresistance (MR) was observed in the film grown at 700°C, especially over 10% in the positive MR. The results indicate the spin splitting caused by strong s-d exchange coupling between the conducting carriers and localized spins of Mn ions.

Original languageEnglish
Pages (from-to)66-69
Number of pages4
JournalJournal of Crystal Growth
Volume287
Issue number1
DOIs
Publication statusPublished - 2006 Jan 18
EventProceedings of the International Conference on Materials for Advanced Technologies (ICMAT 2005) Symposium N ZnO and Related Materials -
Duration: 2005 Jul 32005 Jul 8

Fingerprint

Pulsed laser deposition
pulsed laser deposition
Magnetic properties
Optical properties
Magnetoresistance
Oxygen
magnetic properties
optical properties
Thin films
oxygen
thin films
Exchange coupling
Ferromagnetism
ferromagnetism
Lattice constants
Carrier concentration
Energy gap
Ions
conduction
Substrates

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Jeon, Kyung Ah ; Kim, Jong Hoon ; Shim, Wooyoung ; Lee, Wooyoung ; Jung, M. H. ; Lee, Sang Yeol. / Magnetic and optical properties of Zn1-xMn xO thin films prepared by pulsed laser deposition. In: Journal of Crystal Growth. 2006 ; Vol. 287, No. 1. pp. 66-69.
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abstract = "We report on ferromagnetic characteristics of Zn1- xMnxO thin films grown on Al2O3 substrates by using pulsed laser deposition. The effects of oxygen pressure on the ferromagnetism in the Mn-doped ZnO thin films are discussed. The carrier concentration was found to be controlled by varying the oxygen pressure. By decreasing oxygen pressure, the films exhibited increases in both the lattice constant and fundamental band gap energy. Large magnetoresistance (MR) was observed in the film grown at 700°C, especially over 10{\%} in the positive MR. The results indicate the spin splitting caused by strong s-d exchange coupling between the conducting carriers and localized spins of Mn ions.",
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Magnetic and optical properties of Zn1-xMn xO thin films prepared by pulsed laser deposition. / Jeon, Kyung Ah; Kim, Jong Hoon; Shim, Wooyoung; Lee, Wooyoung; Jung, M. H.; Lee, Sang Yeol.

In: Journal of Crystal Growth, Vol. 287, No. 1, 18.01.2006, p. 66-69.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Magnetic and optical properties of Zn1-xMn xO thin films prepared by pulsed laser deposition

AU - Jeon, Kyung Ah

AU - Kim, Jong Hoon

AU - Shim, Wooyoung

AU - Lee, Wooyoung

AU - Jung, M. H.

AU - Lee, Sang Yeol

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AB - We report on ferromagnetic characteristics of Zn1- xMnxO thin films grown on Al2O3 substrates by using pulsed laser deposition. The effects of oxygen pressure on the ferromagnetism in the Mn-doped ZnO thin films are discussed. The carrier concentration was found to be controlled by varying the oxygen pressure. By decreasing oxygen pressure, the films exhibited increases in both the lattice constant and fundamental band gap energy. Large magnetoresistance (MR) was observed in the film grown at 700°C, especially over 10% in the positive MR. The results indicate the spin splitting caused by strong s-d exchange coupling between the conducting carriers and localized spins of Mn ions.

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