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Critical phenomena and estimation of the spontaneous magnetization by a magnetic entropy analysis in Mn0.96Nb0.04CoGe alloy
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10.1063/1.4811342
/content/aip/journal/jap/113/23/10.1063/1.4811342
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/23/10.1063/1.4811342
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Temperature dependence of magnetization. The inset shows / versus used for the determination of . (b) Temperature dependence of the isothermal magnetic entropy change (, ) for MnNbCoGe calculated from magnetization isotherms. (c) Dependence of the magnetic entropy change on the parameter (/). The solid line represents a linear fit to the data.

Image of FIG. 2.
FIG. 2.

(a) Isothermal magnetization curves for MnNbCoGe in the vicinity of . (b) Arrott plot of vs / at temperatures in the vicinity of . (c) Temperature dependence of the spontaneous magnetization and inverse initial susceptibility (solid lines are fitted to Eqs. (1) and (2) . (d) Modified Arrott plot obtained by the Kouvel–Fisher method showing isotherms of vs with the calculated and .

Image of FIG. 3.
FIG. 3.

(a) Kouvel-Fisher plot for the spontaneous magnetization and the inverse initial susceptibility (T) (solid lines are fitted to Eqs. (3) and (4) ). (b) The critical isotherm analysis at . The inset shows the same plots on the log–log scale (solid line is a linear fit to Eq. (5) . (c) Scaling plots indicating universal curves below and above for the MnNdCoGe alloy.

Image of FIG. 4.
FIG. 4.

(a) Isothermal vs. curves for MnNbCoGe. Solid lines are linear fits to data. (b) Spontaneous magnetization of MnNbCoGe, estimated from the extrapolation of the ( vs. ) curves and from the Arrott plots (/ vs. ).

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/content/aip/journal/jap/113/23/10.1063/1.4811342
2013-06-17
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Critical phenomena and estimation of the spontaneous magnetization by a magnetic entropy analysis in Mn0.96Nb0.04CoGe alloy
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/23/10.1063/1.4811342
10.1063/1.4811342
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