skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Magnetism of hexagonal Mn{sub 1.5}X{sub 0.5}Sn (X = Cr, Mn, Fe, Co) nanomaterials

Abstract

Mn{sub 1.5}X{sub 0.5}Sn (X = Cr, Mn, Fe, Co) nanomaterials in the hexagonal Ni{sub 2}In-type crystal structure have been prepared using arc-melting and melt spinning. All the rapidly quenched Mn{sub 1.5}X{sub 0.5}Sn alloys show moderate saturation magnetizations with the highest value of 458 emu/cm{sup 3} for Mn{sub 1.5}Fe{sub 0.5}Sn, but their Curie temperatures are less than 300 K. All samples except the Cr containing one show spin-glass-like behavior at low temperature. The magnetic anisotropy constants calculated from the high-field magnetization curves at 100 K are on the order of 1 Merg/cm{sup 3}. The vacuum annealing of the ribbons at 550 °C significantly improved their magnetic properties with the Curie temperature increasing from 206 K to 273 K for Mn{sub 1.5}Fe{sub 0.5}Sn.

Authors:
;  [1];  [2]; ;  [3];  [2];  [3];  [1]
+ Show Author Affiliations
  1. Department of Physics, South Dakota State University, Brookings, South Dakota 57007 (United States)
  2. (United States)
  3. Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588 (United States)
Publication Date:
OSTI Identifier:
22410054
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANNEALING; CHROMIUM; COBALT; CRYSTAL STRUCTURE; CURIE POINT; HEXAGONAL LATTICES; INTERMETALLIC COMPOUNDS; IRON; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MAGNETISM; MAGNETIZATION; MANGANESE; MELTING; NANOMATERIALS; SPIN GLASS STATE; TEMPERATURE DEPENDENCE; TIN

Citation Formats

Fuglsby, R., Kharel, P., E-mail: parashu.kharel@sdstate.edu, Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, Zhang, W., Sellmyer, D. J., Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, Valloppilly, S., and Huh, Y. Magnetism of hexagonal Mn{sub 1.5}X{sub 0.5}Sn (X = Cr, Mn, Fe, Co) nanomaterials. United States: N. p., 2015. Web. doi:10.1063/1.4913821.
Copy to clipboard
Fuglsby, R., Kharel, P., E-mail: parashu.kharel@sdstate.edu, Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, Zhang, W., Sellmyer, D. J., Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, Valloppilly, S., & Huh, Y. Magnetism of hexagonal Mn{sub 1.5}X{sub 0.5}Sn (X = Cr, Mn, Fe, Co) nanomaterials. United States. doi:10.1063/1.4913821.
Copy to clipboard
Fuglsby, R., Kharel, P., E-mail: parashu.kharel@sdstate.edu, Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, Zhang, W., Sellmyer, D. J., Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, Valloppilly, S., and Huh, Y. Thu . "Magnetism of hexagonal Mn{sub 1.5}X{sub 0.5}Sn (X = Cr, Mn, Fe, Co) nanomaterials". United States. doi:10.1063/1.4913821.
Copy to clipboard
@article{osti_22410054,
title = {Magnetism of hexagonal Mn{sub 1.5}X{sub 0.5}Sn (X = Cr, Mn, Fe, Co) nanomaterials},
author = {Fuglsby, R. and Kharel, P., E-mail: parashu.kharel@sdstate.edu and Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588 and Zhang, W. and Sellmyer, D. J. and Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588 and Valloppilly, S. and Huh, Y.},
abstractNote = {Mn{sub 1.5}X{sub 0.5}Sn (X = Cr, Mn, Fe, Co) nanomaterials in the hexagonal Ni{sub 2}In-type crystal structure have been prepared using arc-melting and melt spinning. All the rapidly quenched Mn{sub 1.5}X{sub 0.5}Sn alloys show moderate saturation magnetizations with the highest value of 458 emu/cm{sup 3} for Mn{sub 1.5}Fe{sub 0.5}Sn, but their Curie temperatures are less than 300 K. All samples except the Cr containing one show spin-glass-like behavior at low temperature. The magnetic anisotropy constants calculated from the high-field magnetization curves at 100 K are on the order of 1 Merg/cm{sup 3}. The vacuum annealing of the ribbons at 550 °C significantly improved their magnetic properties with the Curie temperature increasing from 206 K to 273 K for Mn{sub 1.5}Fe{sub 0.5}Sn.},
doi = {10.1063/1.4913821},
journal = {Journal of Applied Physics},
number = 17,
volume = 117,
place = {United States},
year = {Thu May 07 00:00:00 EDT 2015},
month = {Thu May 07 00:00:00 EDT 2015}
}
Copy to clipboard
Journal Article:
DOI:  10.1063/1.4913821
Other availability
Find in Google Scholar Find in Google Scholar
Search WorldCat Search WorldCat to find libraries that may hold this journal
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

  • ; ; - AIP Conference Proceedings
    The spinel oxides Zn{sub x}Mg{sub 1.5-x}Mn{sub 0.5}FeO{sub 4} (x = 0.0 to 0.6) and MgAl{sub x}Cr{sub x}Fe{sub 2-2x}O{sub 4} (x = 0.0 to 0.6) abbreviated as ZMMFO and MACFO respectively, were synthesized by standard ceramic processing. The compositional purity of all the specimens was checked by EDAX technique. The X-ray diffractometry was employed to determine the lattice constants and distribution of cations in the interstitial voids. The initial decrease of cell edge parameter (a) for ZMMFO up to x = 0.2 and thereafter expected rise in the ‘a’ and the initial slower rate of reduction in the lattice constant formore » MACFO are explained as basic of cation occupancy. The magnetic ordering in both systems is explained by invoking statistical canting models. The compositional variation of magneton number (n{sub B}) for ZMMFO could be very well explained by Localized canting of spin (LCS) model while Random canting of spin (RCS) model was used for MACFO system.« less

  • ; - Journal of Solid State Chemistry
    A series of mixed-valence manganites La{sub 0.5+x}Sr{sub 1.5−x}Mn{sub 0.5}Cr{sub 0.5}O{sub 4} were synthesized by sol–gel method. Rietveld profile analysis shows that the phases crystallize with tetragonal unit cell in the space group I4/mmm. The lattice parameter c increases with increase in x while a parameter almost remains constant. The Weiss constant (θ) is positive for all the phases and found to increase with increase in x. The ferromagnetic interactions becomes more dominant with increase in x due to increase in Mn{sup 3+}–O–Mn{sup 4+} and Mn{sup 3+}–O–Cr{sup 3+} double exchange interactions. Resistivity can be described by the polaron hopping and themore » variable range hopping model. It was found that the transport mechanism is dominated by Mott's variable range hopping (VRH) model with a decrease of Mott localization energy with increase in x, which explains the decrease of resistivity. - Graphical abstract: Unit cell structure of La{sub 0.6}Sr{sub 1.4}Mn{sub 0.5}Cr{sub 0.5}O{sub 4}. Display Omitted Research highlights: • A series of K{sub 2}NiF{sub 4}-type compounds La{sub 0.5}+xSr{sub 1.5-x}Mn{sub 0.5}Cr{sub 0.5}O{sub 4} (x=0.1, 0.2, 0.3) have been synthesized. • The calculated tolerance factors confirms the tetragonal symmetry of the proposed phases. • The lattice parameter c increases with increase in x while a parameter almost remains constant. • The Weiss constant (θ) is positive for all the phases and found to increase with increase in x • The resistivity data has been best fitted using the Mott's variable range hopping (VRH) model.« less

  • ; ; - Journal of Applied Physics
    The magnetoimpedance (MI) has been measured in the amorphous ribbons of the soft ferromagnetic alloy Co{sub 69}Fe{sub 4.5}X{sub 1.5}Si{sub 10}B{sub 15} (X=Cr, Mn, Ni) as functions of frequency (f). For all of the three samples, at low frequency, f{le}5MHz, the MI ratio increases with increasing frequency, but the MI ratio decreases at high frequency, f{ge}5MHz. The MI profiles are not changed at low frequency regions of f{le}1MHz in the amorphous ribbons. The MI ratio at high frequency of f=5MHz becomes 57% in Co{sub 69}Fe{sub 4.5}Cr{sub 1.5}Si{sub 10}B{sub 15}, but the MI ratio becomes 30% in Co{sub 69}Fe{sub 4.5}Mn{sub 1.5}Si{sub 10}B{submore » 15} and Co{sub 69}Fe{sub 4.5}Ni{sub 1.5}Si{sub 10}B{sub 15}. The MI ratio at f=10MHz becomes 45% in Co{sub 69}Fe{sub 4.5}Cr{sub 1.5}Si{sub 10}B{sub 15} and the MI ratio becomes 23% in Co{sub 69}Fe{sub 4.5}Mn{sub 1.5}Si{sub 10}B{sub 15} and Co{sub 69}Fe{sub 4.5}Ni{sub 1.5}Si{sub 10}B{sub 15}, respectively. The maximum values of field sensitivity are 2.7(X=Cr), 2.5(X=Mn), 2.2(X=Ni)%/Oe for f=5MHz. {copyright} 2001 American Institute of Physics.« less

  • ; - Physical Review, B: Condensed Matter; (United States)
    Local-density-functional calculations have been performed to study the electronic structure and magnetism of 3d transition-metal ions (Cr, Mn, Fe, Co, and Ni) substituting for the Cu ion in La{sub 2{minus}{ital x}}Sr{sub {ital x}}CuO{sub 4}. These systems are simulated by small clusters which are surrounded by over 5000 point charges. It is found that all the substituting ions possess local magnetic moments. Through a systematic comparison we find that the Cu-O system has the smallest {ital p}-{ital d} separation and the largest {ital p}-{ital d} hybridization. The Cu-O system has the smallest local magnetic moment, which can be reduced to zeromore » by hole doping. We also find that removing an electron from these systems further increases the {ital p}-{ital d} hybridization. The crystal-field splittings of these transition-metal oxide systems are found to remain nearly constant at about 0.1 Ry, while the Jahn-Teller splittings vary considerably, depending on the manner in which single-particle levels are filled. Hyperfine fields have been calculated for the Fe ion at both trivalent and divalent states. These calculations are compared with available experimental measurements.« less

  • ; ; ; ... - Journal of Applied Physics
    The structural, magnetic, and electron-transport properties of Mn{sub 3−x}Pt{sub x}Sn (x = 0, 0.5, 1) nanomaterials prepared by arc-melting, melt-spinning, and annealing were investigated. It was found that the hexagonal structure is the most stable structure for Mn{sub 3}Sn and the samples show an antiferromagnetic spin order at room temperature. The Pt-containing samples are mainly tetragonal but contain a small amount of other impurity phases, including hexagonal Mn{sub 3}Sn and Mn{sub 2}Sn. At room temperature, the Pt-containing samples show ferri- or ferromagnetic spin order with a Curie temperature of about 370 K. The measured high-field magnetization and anisotropy constant for Mn{sub 2}PtSn are 405 emu/cm{supmore » 3} and 2.6 Mergs/cm{sup 3}, respectively. The samples are all highly conducting with metallic electron transport and show a substantial negative magnetoresistance.« less