Study of Gd/Co Multilayers with Different Cobalt Layer Thickness Values

IF 1.6 4区物理与天体物理 Q3 PHYSICS, APPLIED

Journal of Superconductivity and Novel Magnetism Pub Date : 2024-08-31 DOI:10.1007/s10948-024-06823-5

Smritiparna Ghosh, Rakhul Raj, Manik Kuila, Zainab Hussain, Dileep Kumar, Mukul Gupta, V.Raghavendra Reddy

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Abstract

The present work reports the magnetic and structural behavior of [Gd/Co]₁₀ multilayers with different Co thickness values, prepared by magnetron sputtering, as a function of thermal annealing. Intermixing is observed with thermal annealing for all the samples; however, complete intermixing is not observed even after annealing at 773 K. Antiparallel alignment of Gd and Co layer magnetization is observed for pristine samples from room temperature X-ray magnetic circular dichroism measurements. Magnetic compensation temperature is found to vary depending on the thickness of Co layers. Temperature-dependent magneto-optical Kerr effect (MOKE) measurements depict the inversion of loops across magnetic compensation temperature for all the pristine samples. However, no signatures of magnetic compensation are observed in the low-temperature MOKE loops for the annealed samples. MOKE loops of the annealed samples exhibit double hysteresis loops. The results are explained in terms of intermixing with annealing.

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不同钴层厚度值的钆/钴多层膜研究

本研究报告了通过磁控溅射法制备的具有不同 Co 厚度值的 [Gd/Co]10 多层膜的磁性和结构行为与热退火的函数关系。通过室温 X 射线磁性圆二色性测量，观察到原始样品的钆层和钴层磁化反平行排列。磁补偿温度随 Co 层厚度的变化而变化。与温度相关的磁光克尔效应（MOKE）测量结果表明，所有原始样品在磁补偿温度下都会出现磁环反转。然而，在退火样品的低温 MOKE 环路中没有观察到磁补偿的迹象。退火样品的 MOKE 回路呈现双磁滞回线。这些结果可以用退火时的混杂现象来解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Superconductivity and Novel Magnetism 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.10%

发文量

342

审稿时长

3.5 months

期刊介绍： The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.