Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Direct evidence for the source of reported magnetic behavior in “CoTe”

Abstract

In order to unambiguously identify the source of magnetism reported in recent studies of the Co-Te system, two sets of high-quality, epitaxial CoTex films (thickness ≈ 300 nm) were prepared by pulse laser deposition (PLD). X-ray diffraction (XRD) shows that all of the films are epitaxial along the [001] direction and have the hexagonal NiAs structure. There is no indication of any second phase metallic Co peaks (either fcc or hcp) in the XRD patterns. The two sets of CoTex films were grown on various substrates with PLD targets having Co:Te in the atomic ratio of 50:50 and 35:65. From the measured lattice parameters c = 5.396 Å for the former and c = 5.402 Å for the latter, the compositions CoTe1.71 (63.1% Te) and CoTe1.76 (63.8% Te), respectively, are assigned to the principal phase. Although XRD shows no trace of metallic Co second phase, the magnetic measurements do show a ferromagnetic contribution for both sets of films with the saturation magnetization values for the CoTe1.71 films being approximately four times the values for the CoTe1.76 films. 59Co spin-echo nuclear magnetic resonance (NMR) clearly shows the existence of metallic Co inclusions in the films. In conclusion, the source of weakmore » ferromagnetism reported in several recent studies is due to the presence of metallic Co, since the stoichiometric composition “CoTe” does not exist.« less

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1]
+ Show Author Affiliations
  1. Univ. of Connecticut, Storrs, CT (United States)
Publication Date:
Research Org.:
Univ. of Connecticut, Storrs, CT (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1499682
Alternate Identifier(s):
OSTI ID: 1414605
Grant/Contract Number:  
FG02-00ER45801
Resource Type:
Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 7; Journal Issue: 12; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhang, Zhiwei, Hines, William A., Budnick, Joseph I., Perry, David M., and Wells, Barrett O. Direct evidence for the source of reported magnetic behavior in “CoTe”. United States: N. p., 2017. Web. doi:10.1063/1.4997161.
Copy to clipboard
Zhang, Zhiwei, Hines, William A., Budnick, Joseph I., Perry, David M., & Wells, Barrett O. Direct evidence for the source of reported magnetic behavior in “CoTe”. United States. https://doi.org/10.1063/1.4997161
Copy to clipboard
Zhang, Zhiwei, Hines, William A., Budnick, Joseph I., Perry, David M., and Wells, Barrett O. Fri . "Direct evidence for the source of reported magnetic behavior in “CoTe”". United States. https://doi.org/10.1063/1.4997161. https://www.osti.gov/servlets/purl/1499682.
Copy to clipboard
@article{osti_1499682,
title = {Direct evidence for the source of reported magnetic behavior in “CoTe”},
author = {Zhang, Zhiwei and Hines, William A. and Budnick, Joseph I. and Perry, David M. and Wells, Barrett O.},
abstractNote = {In order to unambiguously identify the source of magnetism reported in recent studies of the Co-Te system, two sets of high-quality, epitaxial CoTex films (thickness ≈ 300 nm) were prepared by pulse laser deposition (PLD). X-ray diffraction (XRD) shows that all of the films are epitaxial along the [001] direction and have the hexagonal NiAs structure. There is no indication of any second phase metallic Co peaks (either fcc or hcp) in the XRD patterns. The two sets of CoTex films were grown on various substrates with PLD targets having Co:Te in the atomic ratio of 50:50 and 35:65. From the measured lattice parameters c = 5.396 Å for the former and c = 5.402 Å for the latter, the compositions CoTe1.71 (63.1% Te) and CoTe1.76 (63.8% Te), respectively, are assigned to the principal phase. Although XRD shows no trace of metallic Co second phase, the magnetic measurements do show a ferromagnetic contribution for both sets of films with the saturation magnetization values for the CoTe1.71 films being approximately four times the values for the CoTe1.76 films. 59Co spin-echo nuclear magnetic resonance (NMR) clearly shows the existence of metallic Co inclusions in the films. In conclusion, the source of weak ferromagnetism reported in several recent studies is due to the presence of metallic Co, since the stoichiometric composition “CoTe” does not exist.},
doi = {10.1063/1.4997161},
journal = {AIP Advances},
number = 12,
volume = 7,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2017},
month = {Fri Dec 22 00:00:00 EST 2017}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1063/1.4997161
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1: Phase diagram for the Co-Te system as assembled by K. Ishida and T. Nishizawa. The hexagonal β(Co2Te3) phase has the NiAs structure (space group P63/mmc) with a homogeneity range from 54.5 at.% Te (CoTe1.20) to 64.3 at.% Te (CoTe1.80). As the Te content increases from x = 1.20more » to 1.80, Co atoms are removed continuously from the middle layer in the unit cell (see insert), eventually evolving into the orthogonal γ(CoTe2) phase.« less
All figures and tables (7 total)
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

Magnetic Properties of Cobalt Telluride
journal, July 1955

  • Uchida, Enji
  • Journal of the Physical Society of Japan, Vol. 10, Issue 7
  • DOI: 10.1143/jpsj.10.517

Electrical transport and magnetic properties of cobalt telluride nanostructures
journal, September 2016

  • Dahal, Bishnu R.; Dulal, Rajendra P.; Pegg, Ian L.
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 34, Issue 5
  • DOI: 10.1116/1.4959576

Magnetic Susceptibility of Oxygen Adsorbed on Graphite
journal, March 1978

The NIST x-ray photoelectron spectroscopy database
journal, June 1992

  • Rumble, J. R.; Bickham, D. M.; Powell, C. J.
  • Surface and Interface Analysis, Vol. 19, Issue 1-12
  • DOI: 10.1002/sia.740190147

Nuclear magnetic resonance and magnetization study of surfactant-coated epsilon-Co nanoparticles
journal, August 2010

  • Hines, William; Budnick, Joseph; Perry, David
  • physica status solidi (b), Vol. 248, Issue 3
  • DOI: 10.1002/pssb.201046164

A Solution-Phase Chemical Approach to a New Crystal Structure of Cobalt
journal, June 1999

A study on some Co-Te compositions by mössbauer spectroscopy
journal, January 1971

Eine r�ntgenographische und magnetische Untersuchung des Systems Kobalt/Tellur
journal, January 1956

  • Haraldsen, Haakon; Gr�nvold, Fredrik; Hurlen, Tor
  • Zeitschrift f�r anorganische und allgemeine Chemie, Vol. 283, Issue 1-6
  • DOI: 10.1002/zaac.19562830116

Low temperature crystal structure and large lattice discontinuity at T c in superconducting FeTeO x films
journal, September 2013

  • Narangammana, L. K.; Liu, X.; Nie, Y. F.
  • Applied Physics Letters, Vol. 103, Issue 10
  • DOI: 10.1063/1.4820479

Ferrimagnetic Co 1+ δ Te nanostructures
journal, November 2016

Sources of experimental errors in the observation of nanoscale magnetism
journal, January 2009

  • Garcia, M. A.; Fernandez Pinel, E.; de la Venta, J.
  • Journal of Applied Physics, Vol. 105, Issue 1
  • DOI: 10.1063/1.3060808

Synthesis of Uniform CoTe and NiTe Semiconductor Nanocluster Wires through a Novel Coreduction Method
journal, April 2003

  • Peng, Qing; Dong, Yajie; Li, Yadong
  • Inorganic Chemistry, Vol. 42, Issue 7
  • DOI: 10.1021/ic0262031

Morphology-Controllable Synthesis of Cobalt Telluride Branched Nanostructures on Carbon Fiber Paper as Electrocatalysts for Hydrogen Evolution Reaction
journal, January 2016

  • Wang, Ke; Ye, Zhiguo; Liu, Chenqi
  • ACS Applied Materials & Interfaces, Vol. 8, Issue 5
  • DOI: 10.1021/acsami.5b10835

Sample size, position, and structure effects on magnetization measurements using second-order gradiometer pickup coils
journal, January 2006

  • Stamenov, P.; Coey, J. M. D.
  • Review of Scientific Instruments, Vol. 77, Issue 1
  • DOI: 10.1063/1.2149190

Glucose-Assisted Synthesis of CoTe Nanotubes in Situ Templated by Te Nanorods
journal, August 2008

  • Fan, Hai; Zhang, Yuanguang; Zhang, Maofeng
  • Crystal Growth & Design, Vol. 8, Issue 8
  • DOI: 10.1021/cg7011364

Étude par Diffraction-X de Quelques Composés du Système Nicote Obtenus par Synthèse Thermique
journal, January 1971

  • de Meester de Betzembroeck, P.; Naud, J.
  • Bulletin des Sociétés Chimiques Belges, Vol. 80, Issue 1-2
  • DOI: 10.1002/bscb.19710800112

A General Solvothermal Route to the Synthesis of CoTe, Ag 2 Te/Ag, and CdTe Nanostructures with Varied Morphologies
journal, March 2010

  • Jiang, Ling; Zhu, Ying-Jie
  • European Journal of Inorganic Chemistry, Vol. 2010, Issue 8
  • DOI: 10.1002/ejic.200900960

Synthesis and Magnetic Properties of NiSe, NiTe, CoSe, and CoTe
journal, April 2012

  • Umeyama, Norio; Tokumoto, Madoka; Yagi, Shota
  • Japanese Journal of Applied Physics, Vol. 51
  • DOI: 10.1143/jjap.51.053001

Novel magnetic properties of CoTe nanorods and diversified CoTe 2 nanostructures obtained at different NaOH concentrations
journal, January 2017

Magnetic Properties of Nanostructured Materials
journal, January 1996

  • Leslie-Pelecky, Diandra L.; Rieke, Reuben D.
  • Chemistry of Materials, Vol. 8, Issue 8
  • DOI: 10.1021/cm960077f

A New Insight into Cobalt Metal Powder Internal Field 59Co NMR Spectra
journal, August 2014

  • Andreev, A. S.; Lapina, O. B.; Cherepanova, S. V.
  • Applied Magnetic Resonance, Vol. 45, Issue 10
  • DOI: 10.1007/s00723-014-0580-0

Cobalt nanoparticles with preferential hcp structure: A confirmation by X-ray diffraction and NMR
journal, May 2006

  • Matveev, Vladimir V.; Baranov, Dmitry A.; Yurkov, Gleb Yu.
  • Chemical Physics Letters, Vol. 422, Issue 4-6
  • DOI: 10.1016/j.cplett.2006.02.099

Selective synthesis and magnetic properties of uniform CoTe and CoTe2 nanotubes
journal, January 2010

  • Shi, Rongrong; Liu, Xiaohe; Shi, Youguo
  • Journal of Materials Chemistry, Vol. 20, Issue 36
  • DOI: 10.1039/c0jm01777a

Note on the Ferromagnetism of CoTe
journal, April 1956

  • Uchida, Enji
  • Journal of the Physical Society of Japan, Vol. 11, Issue 4
  • DOI: 10.1143/jpsj.11.465

Carbon-supported Co1.67Te2 nanoparticles as electrocatalysts for oxygen reduction reaction in alkaline electrolyte
journal, January 2009

  • Wu, Gang; Cui, Guofeng; Li, Deyu
  • Journal of Materials Chemistry, Vol. 19, Issue 36
  • DOI: 10.1039/b903216a

The enhancement effect in the domain and domain wall in Fe 57 nuclear magnetic resonance
journal, February 1997

  • Dho, Joonghoe; Kim, Mincheol; Lee, Soonchil
  • Journal of Applied Physics, Vol. 81, Issue 3
  • DOI: 10.1063/1.363872

Microstructure and magnetic behavior of carbon-coated Co nanoparticles studied by nuclear magnetic resonance
journal, January 2000

  • Zhang, Y. D.; Budnick, J. I.; Hines, W. A.
  • Applied Physics Letters, Vol. 76, Issue 1
  • DOI: 10.1063/1.125667
    Sort by:
    [ × clear filter / sort ]

    Figures / Tables found in this record:

    FIG. 1 (p. 3)figure
    FIG. 2 (p. 5)figure
    FIG. 3 (p. 6)figure
    FIG. 4 (p. 7)figure
    FIG. 5 (p. 8)figure
    FIG. 6 (p. 9)figure
    FIG. 7 (p. 9)figure
      [ × clear filter / sort ]
      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

      Similar Records in DOE PAGES and OSTI.GOV collections: