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Magnetic study of La0.75Sr0.25MnO3/LaNiO3 multilayers

机译:La0.75Sr0.25MnO3 / LaNiO3多层膜的磁性研究

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We present an investigation of the magnetic properties of metallic La0.75Sr0.25MnO3/LaNiO3 multilayers. We have deduced that the free energy of the structures is mainly driven by the magnetic anisotropies of the La0.75Sr0.25MnO3 layers. We have proved the existence of a magnetocrystalline cubic anisotropy, whose easy axes are oriented in the < 110 > directions and a substrate-induced in-plane uniaxial anisotropy that favours a (010) orientation of the magnetization. We have also shown that the magnetic layers are ferromagnetically coupled for LaNiO3 spacers thinner than 2 nm. For thicker spacers, the coupling strength oscillates with increasing LaNiO3 thickness. (c) 2006 Elsevier B.V. All rights reserved.
机译:我们目前对金属La0.75Sr0.25MnO3 / LaNiO3多层膜的磁性进行了研究。我们已经推论出,结构的自由能主要由La0.75Sr0.25MnO3层的磁各向异性驱动。我们已经证明了磁晶立方各向异性的存在,其易磁化轴沿<110>方向取向,并且存在衬底诱导的面内单轴各向异性,有利于磁化(010)取向。我们还表明,对于厚度小于2 nm的LaNiO3垫片,磁性层是铁磁耦合的。对于较厚的垫片,耦合强度会随着LaNiO3厚度的增加而振荡。 (c)2006 Elsevier B.V.保留所有权利。

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