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
  • Articles: DFG German National Licenses  (2)
  • PACS. 72.80.-r Conductivity of specific materials - 75.80.+q Magnetomechanical and magnetoelectric effects, magnetostriction - 76.50.+g Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance  (1)
  • high temperature  (1)
Source
  • Articles: DFG German National Licenses  (2)
Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Magnetic resonance in oxygen-doped La NiO (1998)
    Springer
    The European physical journal 2 (1998), S. 469-474 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 72.80.-r Conductivity of specific materials - 75.80.+q Magnetomechanical and magnetoelectric effects, magnetostriction - 76.50.+g Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We report an investigation of magnetic resonance by ESR in oxygen-doped La2NiO emphasizing extensively for the first time the role of oxygen stoichiometry. The work is performed at room temperature and on powders with . At low field an hysteresis is detected between increasing and decreasing fields, it depends upon . The resonance lines have characteristic features of ferromagnetic resonance. The intensity ( ) is used as an experimental parameter for investigating the effect of . It allows to built a diagram closely connected to the phase diagram . It suggests a ferromagnetic coupling depending upon . When the (average) structure is tetragonal the low intensity is due to a magnetic polaron of low resistivity. In ranges where a phase separation is detected, the ferromagnetic coupling has a structural origin (DM or local anisotropy) with apparently a strong influence on the electrical resistivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050269
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Some requirements for electronic properties of a material for MHD: Thermal emission of electrons (1981)
    Springer
    International journal of thermophysics 2 (1981), S. 187-199 
    Details
    ISSN: 1572-9567
    Keywords: Electron affinity ; high temperature ; magnetohydrodynamics ; thermal emission of electrons ; work function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract There have been significant advances in MHD (magnetohydrodynamics) conversion recently. Hower, the lifetime of electrodes remains too short due to degradation derived from several mechanisms. Electrical degradation is a consequence of an ionic conductivity contribution and of inefficient thermal emission of electrons. The last factor is analyzed for oxides. Point defects are important to understand the effect of the gaseous environment and influence mainly the preexponential term in electron emission expressions. A correlation between the electron affinity χ and the band gap E g may help to determine a rough value of χ. Oxides with low electron affinity and appropriate doping appear attractive for further research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00503941
    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...