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Properties of the quaternary half-metal-type Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si | | Benjamin Balke
; Gerhard H. Fecher
; Hem C. Kandpal
; Claudia Felser
; PostScript
; PDF
; Other formats
; | | Date: |
5 Jun 2006 | | Subject: | Materials Science | | Abstract: | This work reports on the bulk properties of the quaternary Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si with the Fe concentration ranging from $x=0$ to 1 in steps of 0.1. All samples, which were prepared by arc melting, exhibit $L2_1$ long range order over the complete range of Fe concentration. Structural and magnetic properties of Co$_2$Mn$_{1-x}$Fe$_x$Si Heusler alloys were investigated by means of X-ray diffraction, high and low temperature magnetometry, M{"o}ssbauer spectroscopy and differential scanning calorimetry. The magnetization of the Fe doped Heusler alloys is in agreement with the values of the magnetic moments expected for a Slater-Pauling like behavior of half-metallic ferromagnets. The experimental findings are discussed on the hand of self-consistent calculations of the electronic and magnetic structure. To achieve good agreement with experiment, the calculations indicate that on-site electron-electron correlation must be taken into account, even at low Fe concentration. | | Source: | arXiv, cond-mat/0606108 | | Services: | Forum | Review | PDF | Favorites | |
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