Abstract The properties of Fe-Co-Sn / P-B ribbons prepared by planar flow casting of the melt were investigated by various methods in as-cast and nanocrystallized state. To examine the influence of surfaces on ribbon’s magnetic properties was the major aim. As the surfaces and the ribbon interior possess slightly different properties, mutual macroscopic force is generated and it can affect the magnetic properties. The ribbon with P 2 at % and P-free one was annealed at two different temperatures to achieve partially nanocrystalline structure. P-free ribbon shows tilted hysteresis loop after annealing, what indicates a possible surface squeeze effect. The increase of coercivity after higher temperature annealing at 380 °C is due to the formation of a bcc-Fe phase with a larger grain size and higher crystallinity contents. Oxides, mainly Fe2O3 have been confirmed on surfaces of both the lower temperature (350 °C) annealed ribbons. P substitution appears to reduce the mutual force by impeding the formation of crystalline phase during 350 °C annealing.

中文翻译：

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表面对铁基纳米晶薄带磁性能的影响

摘要 通过多种方法研究了通过熔体平面流铸制备的 Fe-Co-Sn / PB 带材在铸态和纳米晶态下的性能。主要目的是检查表面对带状磁性的影响。由于表面和带内部的性质略有不同，因此会产生相互的宏观力，并会影响磁性。具有 P 2 at % 和无 P 的带在两种不同的温度下退火以获得部分纳米晶体结构。无 P 带在退火后显示出倾斜的磁滞回线，这表明可能存在表面挤压效应。在 380°C 高温退火后矫顽力的增加是由于形成了具有更大晶粒尺寸和更高结晶度的 bcc-Fe 相。氧化物，在较低温度 (350 °C) 退火带的表面上主要是 Fe2O3。P 取代似乎通过在 350 °C 退火过程中阻碍结晶相的形成来降低相互作用力。