8th Liquid Matter Conference September 6-10, 2011 Wien, Austria ...

P1.30Fri 911:10-14:00Magnetic properties of liquid 3d transition metal-SballoysSatoru Ohno, 1 Shuta Tahara, 2 and Tatsuya Okada 31 Niigata University of Pharmacy and Applied Life Sciences, 265-1 Higashijima,Akiha-ku 956-8603, Niigata, Japan2 Niigata University of Pharmacy and Applied Life Sciences, Niigata, Japan3 Niigata College of Technology, Niigata, JapanThe magnetic susceptibility, c, has been measured for liquid transition metal-Sb alloys (TM1-cSbc,TM = Ni - Ti) as a function of temperature. Liquid Ni1-cSbc with c 0. 11, liquid Co1-cSbc withc 0. 39, liquid Fe1-cSbc with c 0. 9 and liquid Mn1-cSbc with 0. 2 c 0. 91 exhibited theCurie-Weiss behavior with a reasonable value of effective Bohr magnetic number. The magneticsusceptibilities of other liquid TM-Sb alloys were found to be almost independent of temperatureor weak positive dependence of temperature, which suggests that TM ions in the regions of theirTM-Sb alloys are in the non-magnetic state. The magnetic susceptibility of liquid TM-Sb alloys inthe non-magnetic state has been studied using the Anderson model. The composition dependenceof c for liquid Ni-Sb and Fe-Sb increases gradually with increasing Ni and Fe compositions, respectively.Particularly, the values of c for liquid Co-Sb increases rapidly on the Co-rich side. Itsuggests that there is a strong inter-atomic exchange interaction between the parallel spins of Coions. The values of c for liquid Mn-Sb, Cr-Sb, V-Sb and Ti-Sb increase constantly with increasingMn, Cr, V and Ti compositions. However, the composition dependence of c for liquid Mn-Sb andCr-Sb shows a maximum at the compositions of 70 at%Mn and 50 at %Cr, respectively. It indicatesthat the magnetic interaction of Mn and Cr ions varies largely near the compositions.30