Electronic spin resonance study of room-temperature ferromagnet cr3te4

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Bulletin Pub Date : 2023-10-19 DOI:10.1016/j.materresbull.2023.112585

Yanting Teng , Aina Wang , Azizur Rahman , Jingxin Li , Hongwei Chen , Junfeng Yang , Lei Zhang , Bo Hong , Yuheng Zhang

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Abstract

Chromium telluride Cr $_{3}$ Te $_{4}$ with intrinsic room-temperature ferromagnetism has substantially practical application in spintronics. In this work, the microwave response of Cr $_{3}$ Te $_{4}$ single crystal is investigated by the electronic spin resonance (ESR) with the magnetic field applied along various directions. Two resonance lines are observed for both $H / / a b$ and $H / / c$ , which are suggested to result from ferromagnetic (FM) and antiferromagnetic (AFM) fluctuations respectively. The angle-dependent ESR spectra show considerable anisotropy, with a strong microwave response for $H / / a b$ and a weak microwave response for $H / / c$ . The analysis of the ESR spectra reveals the coexistence of FM and AFM fluctuations in this system. Moreover, this anisotropic microwave response in single crystal Cr $_{3}$ Te $_{4}$ could benefit the microwave-based spintronic device.

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室温铁磁体cr3te4的电子自旋共振研究

具有本征室温铁磁性的碲化铬Cr3Te4在自旋电子学中有着实质性的实际应用。在本工作中，通过电子自旋共振（ESR）研究了Cr3Te4单晶在沿不同方向施加磁场的情况下的微波响应。观察到H//ab和H//c的两条共振线，认为这分别是由铁磁（FM）和反铁磁（AFM）波动引起的。与角度相关的ESR光谱显示出相当大的各向异性，对于H//ab具有强微波响应，对于H//c具有弱微波响应。ESR谱的分析揭示了该系统中FM和AFM波动的共存。此外，单晶Cr3Te4中的这种各向异性微波响应可能有利于基于微波的自旋电子器件。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.