�ber den Zusammenhang der magnetischen und mechanischen Eigenschaften der gewalzten Heusler-Bronze (Mangan-Aluminium-Kupfer)

Heusler, Fr.

doi:10.1007/bf01332584

Cited by 10 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since U, is determined by the chemical potential p o at which A = A, it follows from Equation (2) that (45) in accord with experimental results due to F l a d e [36] and other authors [2].…”

Section: Equation (2) One Obtainssupporting

confidence: 84%

“…Neglecting energetic interaction among lattice defects, S c h m a l z r i e d a n d T r e t j a k o w [30] have derived the following equation for the oxygen equilibrium partial pressure as a function of iron deficit A in magnetite Extrapolating results of measurements of the current density as a function of potential U under non-stationary conditions, Weil [14] has arrived at the conclusion that in I N HISO, (PH z 0.3) # -4'' tends to zero at U = 0.57 volt, which is in essence the Flade potential. Weil's evaluation, however, is not conclusive, since according to Heusler [16] and Vetter and Gorn [17] relations for the increase in thickness of the oxide layer during non-stationary polarization are more involved than assumed by Weil [14].…”

Section: C3[3f(u -Eand) -Dg:o -3 R T H A~+ ]mentioning

confidence: 99%

See 1 more Smart Citation

Models for Lattice Defects in Oxide Layers on Passivated Iron and Nickel

Wagner

1973

Ber Bunsenges Phys Chem

View full text Add to dashboard Cite

Passivity of iron in acidic solutions is ascribed to a thin film of iron‐deficient magnetite with the limiting compositions Fe3O4 and Fe2.67O4. If the composition at the oxide/solution interface is close to the formula Fe2.67O4, it follows theoretically that the stationary corrosion current density ic is virtually independent of the voltage U with respect to a standard hydrogen electrode. This is in accord with available experimental data. The Flade potential UF of iron is interpreted as the potential at which the composition of the oxide approaches the formula Fe2.83O4 halfway between the limiting compositions Fe3O4 and Fe2.67O4.For the oxide layer on passivated nickel, another model is suggested, which yields a quasi‐exponential increase of ic with U in accord with available experimental data.

show abstract

Section: Equation (2) One Obtainssupporting

confidence: 84%

Section: C3[3f(u -Eand) -Dg:o -3 R T H A~+ ]mentioning

confidence: 99%

Models for Lattice Defects in Oxide Layers on Passivated Iron and Nickel

Wagner

1973

Ber Bunsenges Phys Chem

View full text Add to dashboard Cite

show abstract

“…Heusler alloys have been discovered by F. Heusler, in 1903 [1]. However, the surge in the research on Heusler alloys * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Probing the martensite transition and thermoelectric properties of Co_xTaZ (Z = Si, Ge, Sn and x = 1, 2): a study based on density functional theory

Dutt

Pandey

Chakrabarti

2020

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

In this work, using density functional theory based electronic structure calculations, we carry out a comparative study of geometric, mechanical, electronic, magnetic, and thermoelectric properties of Co x TaZ alloys, where Z = Si, Ge and Sn and x = 1 and 2. In the present study, a systematic approach has been taken to perform calculations to probe the possibility of existence of a tetragonal (martensite) phase in these alloys and also to perform a comparative study of various physical properties of the six systems, mentioned above, in the cubic and possible tetragonal phases. From our calculations, a tetragonal phase has been found to be stable up to about 400 K in case of Co2TaSi and Co2TaGe alloys, and up to about 115 K for Co2TaSn, indicating the presence of room temperature cubic phase in the latter alloy unlike the former two. Further, the results based on the energetics and electronic structure have been found to corroborate well with the elastic properties. All the above-mentioned full Heusler alloys (FHAs) show magnetic behavior with metallicity in both the phases. However, their half Heusler counterparts exhibit non-magnetic semi-conducting behavior in the cubic phase. We calculate and compare the thermoelectric properties, in detail, of all the materials in the cubic and possible tetragonal phases. In the cubic phase, the half Heusler alloys exhibit improved thermoelectric properties compared to the respective FHAs. Furthermore, it is observed that the FHAs exhibit higher (by about an order of magnitude) values of Seebeck coefficients in their cubic phases, compared to those in the tetragonal phases (which are of the order of only a few micro-volts/Kelvin). The observed behaviors of the transport properties of the probed materials have been analyzed using the topology of the Fermi surface.

show abstract

A Survey of Magnetic Materials in Relation to Structure*

Ellis¹,

Schumacher²

1935

Bell System Technical Journal

View full text Add to dashboard Cite

The structure dependence of magnetic characteristics of the more important magnetic materials is discussed. The natural grouping into soft magnetic materials and hard or permanent magnet materials is used. In the first group are: magnetic iron, silicon steel and the alloys of iron, nickel and cobalt. The latter group includes the well‐known carbon and alloy steels, and also the newly developed precipitation hardening α‐solid solution types. Examples of the latter are the iron‐nickel‐aluminum and the iron‐cobalt‐molybdenum alloys. In discussing the properties, the relationship to structure is emphasized. With the soft magnetic materials purification and the development of proper structural configuration are important. The special metallurgical control required to produce certain magnetic materials in dust form is described. The generalization is made that permanent magnet characteristics are due to precipitation effects resulting from decomposition of supersaturated solid solutions.

show abstract

�ber den Zusammenhang der magnetischen und mechanischen Eigenschaften der gewalzten Heusler-Bronze (Mangan-Aluminium-Kupfer)

Cited by 10 publications

References 0 publications

Models for Lattice Defects in Oxide Layers on Passivated Iron and Nickel

Models for Lattice Defects in Oxide Layers on Passivated Iron and Nickel

Probing the martensite transition and thermoelectric properties of Co_xTaZ (Z = Si, Ge, Sn and x = 1, 2): a study based on density functional theory

A Survey of Magnetic Materials in Relation to Structure*

Contact Info

Product

Resources

About

�ber den Zusammenhang der magnetischen und mechanischen Eigenschaften der gewalzten Heusler-Bronze (Mangan-Aluminium-Kupfer)

Cited by 10 publications

References 0 publications

Models for Lattice Defects in Oxide Layers on Passivated Iron and Nickel

Models for Lattice Defects in Oxide Layers on Passivated Iron and Nickel

Probing the martensite transition and thermoelectric properties of Co x TaZ (Z = Si, Ge, Sn and x = 1, 2): a study based on density functional theory

A Survey of Magnetic Materials in Relation to Structure*

Contact Info

Product

Resources

About

Probing the martensite transition and thermoelectric properties of Co_xTaZ (Z = Si, Ge, Sn and x = 1, 2): a study based on density functional theory