Effects of Nb and Mo additions on thermal behavior, microstructure and magnetic property of FeCoZrBGe alloy

doi:10.1088/1674-1056/abc7a8

Abstract Both Nb and Mo additions play a vital role in FeCo-based alloys and it is crucial to understand their roles and contents on thermal behavior, microstructural feature and magnetic property of alloys. Nanocrystalline alloy ribbons Fe₄₀Co₄₀Zr_9-yM_yB₁₀Ge₁ (y=0-4; M= Nb, Mo) were prepared by crystallizing the as-quenched amorphous alloys. The effects of Nb and Mo additions on structures and properties of the Fe₄₀Co₄₀Zr₉B₁₀Ge₁ alloy are investigated systemically and compared. With increasing Nb or Mo content, the primary crystallization temperature, grain size of α -Fe(Co) phase and coercivity H_c all decrease. Moreover, the effect of Mo addition on thermal behavior, microstructure and magnetic properties of the FeCoZrBGe alloy is greater compared to Nb addition. The gap between primary and secondary crystallization peaks of Mo-containing alloys is wider than that of Nb-containing alloys. Both grain size and H_c of Mo-containing alloys are smaller than those of Nb-containing alloys. For Fe₄₀Co₄₀Zr₉B₁₀Ge₁ alloy, high Mo addition proportion is better compared to high Nb addition proportion.

Keywords: alloy Nb addition Mo addition transmission electron microscopy

Received: 17 September 2020
Revised: 22 October 2020
Accepted manuscript online: 05 November 2020

PACS:	81.07.Bc	(Nanocrystalline materials)
	75.75.-c	(Magnetic properties of nanostructures)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51301075) and supported by Sinoma Institute of Materials Research (Guang Zhou) Co., Ltd.

Corresponding Authors: ^†Corresponding author. E-mail: huazhong196110@163.com

Cite this article:

Yaming Sun(孙亚明), Zhiqun Wang(王志群), Shi-Chong Xu(徐仕翀), and Zhong Hua(华中) Effects of Nb and Mo additions on thermal behavior, microstructure and magnetic property of FeCoZrBGe alloy 2021 Chin. Phys. B 30 038103

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Effects of Nb and Mo additions on thermal behavior, microstructure and magnetic property of FeCoZrBGe alloy

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