مرکز منطقه ای اطلاع رساني علوم و فناوري - Magnetic Properties and Crystal Structure of Melt Spun <formula formulatype="inline"> <img src="/images/tex/19869.gif" alt="{\\rm SmCo}_{7-{\\rm x}}{\\rm Sn}_{\\rm x}"> </formula> (<formula formulatype="inline"> <img src="/images/tex/19870.gif" alt="{\\rm

Title :

Magnetic Properties and Crystal Structure of Melt Spun ${\\rm SmCo}_{7-{\\rm x}}{\\rm Sn}_{\\rm x}$ ( ${\\rm</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Author : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Hsieh, C.C. ; Chang, H.W. ; Sun, A.C. ; Chang, Wen Cheng ; Guo, Peng</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Author_Institution : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Phys. Dept., Nat. Chung Cheng Univ., Chiayi, Taiwan</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Volume : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>47</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Issue : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>10</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>fYear : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>2011</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Firstpage : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>3332</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Lastpage : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>3335</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Abstract : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>The magnetic properties and crystal structure of melt spun SmCo<sub>7-x</sub>Sn<sub>x</sub> (x=0-0.6) ribbons have been investigated. The XRD patterns of ribbons spun at a high wheel speed of 40 m/s show that a pure TbCu<sub>7</sub>-type structure is formed only for x=0.1, while a mixture of CoSn appears at the grain biundary for x ≥ 0.2 and 2:17 phase appears for x ≥ 0.4. The Rietvield refinement result shows that Sn prefers to occupy the 2e sites in TbCu<sub>7</sub>-type structure, which is similar to Ge. The coercivity of melt spun SmCo<sub>7-x</sub>Sn<sub>x</sub> ribbons is enhanced from 1.9 kOe for x=0 to 8.4 kOe for x=0.3 . The grain size is reduced with Sn substitution from 100-400 nm for SmCo<sub>7</sub> ribbons to 50-100 nm for SmCo<sub>6.7</sub>Sn<sub>0.3</sub> ribbons, which also contributes the coercivity in addition to the enhancement of magnetic anisotropy field by the occupation of Sn atoms at 2e sites.</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Keywords : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>X-ray diffraction; cobalt alloys; crystal structure; grain size; magnetic materials; melt spinning; permanent magnets; samarium alloys; tin alloys; Rietvield refinement; SmCo<sub>7-x</sub>Sn<sub>x</sub>; XRD patterns; coercivity; crystal structure; grain boundary; grain size; high wheel speed; magnetic anisotropy field; magnetic properties; melt spun SmCo<sub>7-x</sub>Sn<sub>x</sub> ribbons; size 100 nm to 400 nm; size 50 nm to 100 nm; Coercive force; Crystals; Magnetic anisotropy; Magnetic properties; Tin; X-ray scattering; <formula formulatype=$ ${rm TbCu}_{7}$; Crystal structure; melt spinning; permanent magnet;