Magnetism in thin films of CaB6 and SrB6
Magnetism in thin films of CaB6 and SrB6
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DOI：
10.1063/1.1840113
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发表时间：
2004-12
影响因子：
4
通讯作者：
L. Dorneles;M. Venkatesan;M. Moliner;J. Lunney;J. Coey
中科院分区：
文献类型：
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作者：
L. Dorneles;M. Venkatesan;M. Moliner;J. Lunney;J. Coey
用脉冲激光沉积法在MgO（100）或Al_2 O_3（001）衬底上沉积的无序六硼化物CaB_6和SrB_6薄膜具有铁磁性。典型的室温下单位面积的基片磁矩为350μBnm−2，其中最大值出现在CaB 6/Al 2 O3上。晶格缺陷可能是外来的高温磁性的起源。在薄至12 nm的薄膜中存在的力矩似乎存在于其极化约为0.4特斯拉的界面层中。
Thin films of disordered hexaborides CaB6 and SrB6 deposited by pulsed-laser deposition on MgO (100) or Al2O3 (001) substrates are ferromagnetic. A typical room-temperature moment per unit area of substrate is 350μBnm−2, with the largest values being found for CaB6 on Al2O3. Lattice defects are the likely origin of the exotic, high-temperature magnetism. The moment, which is present in films as thin as 12nm, appears to reside in an interface layer whose polarization is approximately 0.4Tesla.