Spin freezing and magnetic inhomogeneities in bilayer manganites.
نویسندگان
چکیده
We have performed a muon spin rotation study on polycrystalline samples of electron-doped layered manganites, La2-2xSr1+2xMn2O7 (0.4< or =x<1), in order to investigate the local magnetic structure and spin dynamics. Our results provide evidence for phase separation into A-type antiferromagnetic and charge-ordered phases for x=0.52 and spin freezing at low temperatures (T<100 K) for 0.52< or =x<0.75. A new phase diagram which includes this spin-freezing region is proposed.
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ورودعنوان ژورنال:
- Physical review letters
دوره 89 27 شماره
صفحات -
تاریخ انتشار 2002