JOURNAL ARTICLE

The enhanced antiferromagnetic interaction and tunable temperature coefficient of resistivity in antiperovskite compounds Mn3−xCoxAgN (0≤x≤0.2).

  • Published In: Modern Physics Letters B, 2025, v. 39, n. 16. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Miao, Zhuang; Liu, Zhidong; Zhang, Yani; Ding, Jinfeng; Wang, Chuanhe; Kong, Weiao; Li, Gen; Guo, Xinge; Tan, Shugang 3 of 3

Abstract

The magnetic and electric evolution with the substitution level of Co element has been investigated in Mn 3 − x CoxAgN. The DC magnetic measurements demonstrate that the substitution of Co for Mn enhances the antiferromagnetic (AFM) interaction and weakens the magnetic irreversibility at low temperature. The strengthening of AFM order in Mn 3 − x CoxAgN has been attributed to the enhanced Co–Mn AFM interaction and weakened Co–N–Mn ferromagnetic (FM) interaction. Additionally, with the gradual increase of Co content, the temperature coefficient of resistivity (TCR) in paramagnetic (PM) region changes from a positive one to a negative one gradually. When x = 0. 1 5 , the TCR value is only ∼ 5 ppm/K, which is one magnitude smaller than that of conventional standard resistor materials. The negative TCR phenomenon is closely associated with the Co-element-induced lattice disorder, which leads to the weak localization of conduction electrons. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:Modern Physics Letters B. 2025/06, Vol. 39, Issue 16, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2025
  • ISSN:0217-9849
  • DOI:10.1142/S0217984925500174
  • Accession Number:184957414
  • Copyright Statement:Copyright of Modern Physics Letters B is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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