Фотоиндуцированный магнитооптический эффект Керра в сульфиде европия EuS
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The photoinduced magnetization in europium sulfide EuS was studied by the magneto-optical Kerr effect. It is experimentally established that when a sample is exposed to light with a photon energy greater than the band gap, photoinduced magnetization arises, associated with the formation of magnetic polarons with a large magnetic moment of about 3000 μB. The polarons are excited in a narrow temperature range of 12-18 K and form a superparamagnetic ensemble with an average polaron lifetime of 13 µs. An experimental setup for measuring photoinduced magnetization with the optical pump-and-probe method is described.
2011 ◽
Vol 82
(10)
◽
pp. 103901
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2004 ◽
Vol 65
(10)
◽
pp. 1757
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