利用交流磁化率实验结果研究SrRuO3材料的相变规律:利用居里温度处M(h,0)∝h1/δ关系得到δ=3.17±0.20.计算约化温度tm=(Tm-TC)/TC,利用公式,tm∝h1/(γ+β),得到γ+β值为1.50±0.05.利用交流磁化率峰的高度xm与峰的温度tm的关系,xm(h,tm)∝tm-γ,得到指数y=0.96±0.05.以上结果与平均场预测值相近.
参考文献
[1] | Stanley H.Eugene, Introduction to Phase Transition and Critical Phenomena[M].Oxford University Press, Oxford,1971 |
[2] | Collins M.Magnetic Critical Scattering[M].Oxford University Press,1989 |
[3] | Binney J J;Dowrick N J;Fisher A J.The Theory of Critical Phenomena[M].Oxford Science Publication,1992 |
[4] | Kats Y.;Reiner JW.;Geballe TH.;Beasley MR.;Kapitulnik A.;Klein L. .Magnetic resistivity in SrRuO3 and the ferromagnetic phase transition - art. no. 054435[J].Physical Review.B.Condensed Matter,2001(5):054435-1-054435-6. |
[5] | Williams G;R A Hein.In Magnetic susceptibility of superconductors and other spin systems[M].New York, Plenum,1991:475. |
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