Fabrication and magnetization reversal of L10 FeMnPt dots surrounded by paramagnetic A1 phase formed by ion irradiation

Fabrication and magnetization reversal of L10 FeMnPt dots surrounded by paramagnetic A1 phase formed by ion irradiation
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离子辐照形成的顺磁性 A1 相包围的 L10 FeMnPt 点的制备和磁化反转

DOI:
10.1016/j.scriptamat.2017.08.009
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发表时间:
2018
期刊:
影响因子:
6
通讯作者:
Hasegawa T
Hasegawa T
中科院分区:
材料科学1区
文献类型:
--
作者:
Hasegawa T

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提出了一种离子辐照引起铁磁-顺磁相变的纳米图化方法。制备了有序l10结构、单轴磁晶各向异性常数(Ku)为2.1 × 106J m−3的A (Fe0.56Mn0.44) 50pt50薄膜。Mn离子辐照产生了一个圆点直径为100 nm的光滑的FM点阵列,其周围是PM相,这是由于结构从thel10结构转变为无序的a1结构而引起的FM - PM相变和Mn含量的轻微增加所引起的。通过研究点反转场的角度依赖性,研究了磁化反转过程。
A nanopatterning method involving a ferromagnetic (FM)–paramagnetic (PM) phase transformation caused by ion irradiation has been developed. A (Fe0.56Mn0.44)50Pt50film with the orderedL10structure and uniaxial magnetocrystalline anisotropy constant (Ku) of 2.1 × 106J m− 3was fabricated. Mn ion irradiation produced a smooth FM dot array with dot diameters of 100 nm surrounded by the PM phase, which was obtained from the induced FM–PM phase transition caused by the structural transformation from theL10structure to the disorderedA1 structure and a slight increase in the Mn content. The magnetization reversal process was studied by investigating the angle dependence of the dot reversal field.
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