Properties of the quaternary half-metal-type Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si

Details Properties of the quaternary half-metal-type Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si Properties of the quaternary half-metal-type Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si

2006-06-05

arxiv.org/abs/cond-mat/0606108v2

Physics

Condensed Matter

Materials Science

26 pages, 9 figures Phys. Rev. B accepted

Scientific paper

10.1103/PhysRevB.74.104405

This work reports on the bulk properties of the quaternary Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si with the Fe concentration $x=$. 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\ss}bauer spectroscopy, and differential scanning calorimetry. The electronic structure was explored by means of high energy photo emission spectroscopy at about 8 keV photon energy. This ensures true bulk sensitivity of the measurements. 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. The present investigation focuses on searching for the quaternary compound where the half-metallic behavior is stable against outside influences. Overall, the results suggest that the best candidate may be found at an iron concentration of about 50%.

Affiliated with

Also associated with

No associations

Rating

Properties of the quaternary half-metal-type Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Properties of the quaternary half-metal-type Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Properties of the quaternary half-metal-type Heusler alloy Co$_2$Mn$_{1-x}$Fe$_x$Si will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-541902