Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1990-1994  (4)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Mössbauer effect and magnetization studies of α-FeMn alloys (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 7524-7531 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The bcc phase of Fe-Mn alloys was studied by means of the Mössbauer effect, x-ray diffraction, thermogravimetry analysis, and magnetization measurements for Mn concent- rations up to 17.5 at.%. These alloys are disordered over this composition range and both the average hyperfine field and critical temperature (Tc) decrease with increasing Mn concentration. Above 5 at.% Mn about 3 at.% Ti was added to each sample in order to stabilize and retain the α-phase at room temperature. The HF distribution shows peaks spaced 24 kOe apart corresponding to the substitution of each Fe nearest neighbor by a Mn atom. From the magnetization measurements we have found that the mean magnetic moment decreases at a slow rate for Mn contents up to 11 at.% followed by a fast decrease for larger Mn concentration. The usual interpretation of a constant magnetic moment for Fe and a small one for Mn cannot be used to interpret the present results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349704
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Mössbauer effect study of γ-FeMn alloys (1992)
    Springer
    Hyperfine interactions 73 (1992), S. 233-245 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The disordered antiferromagnetic γ-FeMn alloys in the range of Mn concentration from 0 up to 50 at.% Mn were investigated by means of X-ray diffraction analysis (XRD), differential scanning calorimeter (DSC) and Mössbauer spectroscopy (ME) at room temperature and at 80 K. The lattice parameter is constant for Mn contents below 27 at.% and increases linearly for higher Mn concentration. The RT Mössbauer spectra for the alloys with less than 20 at.% Mn were fitted with quadrupole splitting (QS) distribution, and above 20 at.% Mn they were fitted with magnetic hyperfine field (HF) distribution. The averageQS decreases, while the HF maintain a constant value by increasing the Mn concentration. At 80 K, the HF increases linearly up to 30 at.% Mn and then maintains a constant value at about 38 kOe. The peak of the specific heat (c p) at the Néel temperature changes from broad to sharp as the Mn content increases. The Néel temperature increases with Mn concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02418598
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Mössbauer study of Fe-Al disordered alloys near the critical concentration (1994)
    Springer
    Hyperfine interactions 83 (1994), S. 311-314 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Disordered bcc Fe1−q Al q alloys in the composition range 0.5≤q≤0.6 were studied by Mössbauer effect measurements. The Mössbauer spectra at 300 K of all the samples consist of two paramagnetic sites, one is a singlet and the other a doublet with quadrupole splitting. The results can be interpreted by considering that the sites of this disordered system are arranged near the configurations of the Fe and Al sites of the Fe-Al ordered system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02074291
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Mössbauer evidence of reentrant spin-glass phase in the Fe0.45Mn0.25Al0.30 disordered alloy (1994)
    Springer
    Hyperfine interactions 83 (1994), S. 203-208 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Mössbauer effect measurements in disordered Fe0.45Mn0.25Al0.30 alloy from 15 to 300 K show it to be a reentrant spin-glass with a freezing temperatureT K near 60 K and a Curie temperatureT c near 250 K. The Mössbauer spectra show a paramagnetic site with a relative area that increases withT and this increase is abrupt near 60 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02074273
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...