Structural and magnetic dynamics of a laser induced phase transition in FeRh.
نویسندگان
چکیده
We use time-resolved x-ray diffraction and magneto-optical Kerr effect to study the laser-induced antiferromagnetic to ferromagnetic phase transition in FeRh. The structural response is given by the nucleation of independent ferromagnetic domains (τ(1)~30 ps). This is significantly faster than the magnetic response (τ(2)~60 ps) given by the subsequent domain realignment. X-ray diffraction shows that the two phases coexist on short time scales and that the phase transition is limited by the speed of sound. A nucleation model describing both the structural and magnetic dynamics is presented.
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ورودعنوان ژورنال:
- Physical review letters
دوره 108 8 شماره
صفحات -
تاریخ انتشار 2012