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Title: Relevance of the Preparation of the Target for PLD on the Magnetic Properties of Films of Iron-Doped Indium Oxide

Abstract

This paper concerns the importance of the preparation of the targets that may be used for pulsed laser deposition of iron-doped indium oxide films. Targets with a fixed concentration of iron are fabricated from indium oxide and iron metal or one of the oxides of iron, FeO, Fe 3O 4 and Fe 2O 3. Films from each target were ablated onto sapphire substrates at the same temperature under different oxygen pressures such that the thickness of the films was kept approximately constant. The films were studied using X-ray diffraction, X-ray absorption (both XANES and EXAFS), optical absorption and magnetic circular dichroism. The magnetic properties were measured with a SQUID magnetometer. At the lowest oxygen pressure, there was evidence that some of the iron ions in the films were in the state Fe 2+, rather than Fe 3+, and there was also a little metallic iron; these properties were accompanied by a substantial magnetisation. As the amount of the oxygen was increased, the number of defect phases and the saturation magnetisation was reduced and the band gap increased. In each case, we found that the amount of the oxygen that had been included in the target from the precursor added tomore » the effect of adding oxygen in the deposition chamber. It was concluded that the amount of oxygen in the target due to the precursor was an important consideration but not a defining factor in the quality of the films.« less

Authors:
; ; ; ORCiD logo; ; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Canadian Light Source, Inc.; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; United Kingdom Science and Technology Facilities Council
OSTI Identifier:
1529714
Alternate Identifier(s):
OSTI ID: 1526008
Grant/Contract Number:  
[AC02-06CH11357]
Resource Type:
Published Article
Journal Name:
Coatings
Additional Journal Information:
[Journal Name: Coatings Journal Volume: 9 Journal Issue: 6]; Journal ID: ISSN 2079-6412
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English
Subject:
36 MATERIALS SCIENCE; PLD; target preparation; room temperature ferromagnetism; dilute magnetic semiconductor; Indium oxide; (InFe)2O3

Citation Formats

Albargi, Hasan B., Alshammari, Marzook S., Museery, Kadi Y., Heald, Steve M., Jiang, Feng-Xian, Saeedi, Ahmad M. A., Fox, A. Mark, and Gehring, Gillian A. Relevance of the Preparation of the Target for PLD on the Magnetic Properties of Films of Iron-Doped Indium Oxide. Switzerland: N. p., 2019. Web. doi:10.3390/coatings9060381.
Albargi, Hasan B., Alshammari, Marzook S., Museery, Kadi Y., Heald, Steve M., Jiang, Feng-Xian, Saeedi, Ahmad M. A., Fox, A. Mark, & Gehring, Gillian A. Relevance of the Preparation of the Target for PLD on the Magnetic Properties of Films of Iron-Doped Indium Oxide. Switzerland. doi:10.3390/coatings9060381.
Albargi, Hasan B., Alshammari, Marzook S., Museery, Kadi Y., Heald, Steve M., Jiang, Feng-Xian, Saeedi, Ahmad M. A., Fox, A. Mark, and Gehring, Gillian A. Thu . "Relevance of the Preparation of the Target for PLD on the Magnetic Properties of Films of Iron-Doped Indium Oxide". Switzerland. doi:10.3390/coatings9060381.
@article{osti_1529714,
title = {Relevance of the Preparation of the Target for PLD on the Magnetic Properties of Films of Iron-Doped Indium Oxide},
author = {Albargi, Hasan B. and Alshammari, Marzook S. and Museery, Kadi Y. and Heald, Steve M. and Jiang, Feng-Xian and Saeedi, Ahmad M. A. and Fox, A. Mark and Gehring, Gillian A.},
abstractNote = {This paper concerns the importance of the preparation of the targets that may be used for pulsed laser deposition of iron-doped indium oxide films. Targets with a fixed concentration of iron are fabricated from indium oxide and iron metal or one of the oxides of iron, FeO, Fe3O4 and Fe2O3. Films from each target were ablated onto sapphire substrates at the same temperature under different oxygen pressures such that the thickness of the films was kept approximately constant. The films were studied using X-ray diffraction, X-ray absorption (both XANES and EXAFS), optical absorption and magnetic circular dichroism. The magnetic properties were measured with a SQUID magnetometer. At the lowest oxygen pressure, there was evidence that some of the iron ions in the films were in the state Fe2+, rather than Fe3+, and there was also a little metallic iron; these properties were accompanied by a substantial magnetisation. As the amount of the oxygen was increased, the number of defect phases and the saturation magnetisation was reduced and the band gap increased. In each case, we found that the amount of the oxygen that had been included in the target from the precursor added to the effect of adding oxygen in the deposition chamber. It was concluded that the amount of oxygen in the target due to the precursor was an important consideration but not a defining factor in the quality of the films.},
doi = {10.3390/coatings9060381},
journal = {Coatings},
number = [6],
volume = [9],
place = {Switzerland},
year = {2019},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.3390/coatings9060381

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Cited by: 2 works
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