Ferromagnetic Cr2Te3 nanorods with ultrahigh coercivity

Fang Wang, Juan Du, Fan Sun, Renat F Sabirianov, Nabil Al-Aqtash, Debasis Sengupta, Hao Zeng, Xiaohong Xu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Ferromagnetic Cr2Te3 nanorods were synthesized by a one-pot high-temperature organic-solution-phase method. The crystalline phases and magnetic properties can be systematically tuned by varying the molar ratio of the Cr and Te precursors. A magnetically hard phase, identified as chemically ordered Cr2Te3, is the dominating one at the precursor ratio between Cr:Te = 1:1.2 and 1:1.8. A magnetically soft phase, attributed to chemical disorder due to composition inhomogeneity and stacking faults, is present under either Cr-rich or Te-rich synthesis conditions. A large coercivity of 9.6 kOe is obtained for a Cr:Te precursor ratio of 1:1.8, which is attributed to the large magnetocrystalline anisotropy of ordered Cr2Te3 nanorods, and verified by density-functional theory calculations. The hard and soft phases sharing coherent interfaces co-exist in a seemingly single-crystalline nanorod, showing an unusual transition from exchange-coupled behavior at higher temperatures to two-phase behavior as the temperature is lowered.

Original languageEnglish (US)
Pages (from-to)11028-11033
Number of pages6
JournalNanoscale
Volume10
Issue number23
DOIs
StatePublished - Jun 21 2018

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Coercive force
Nanorods
Crystalline materials
Magnetocrystalline anisotropy
Stacking faults
Phase behavior
Temperature
Density functional theory
Magnetic properties
Chemical analysis

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Wang, F., Du, J., Sun, F., Sabirianov, R. F., Al-Aqtash, N., Sengupta, D., ... Xu, X. (2018). Ferromagnetic Cr2Te3 nanorods with ultrahigh coercivity. Nanoscale, 10(23), 11028-11033. https://doi.org/10.1039/c8nr02272k

Ferromagnetic Cr2Te3 nanorods with ultrahigh coercivity. / Wang, Fang; Du, Juan; Sun, Fan; Sabirianov, Renat F; Al-Aqtash, Nabil; Sengupta, Debasis; Zeng, Hao; Xu, Xiaohong.

In: Nanoscale, Vol. 10, No. 23, 21.06.2018, p. 11028-11033.

Research output: Contribution to journalArticle

Wang, F, Du, J, Sun, F, Sabirianov, RF, Al-Aqtash, N, Sengupta, D, Zeng, H & Xu, X 2018, 'Ferromagnetic Cr2Te3 nanorods with ultrahigh coercivity', Nanoscale, vol. 10, no. 23, pp. 11028-11033. https://doi.org/10.1039/c8nr02272k
Wang F, Du J, Sun F, Sabirianov RF, Al-Aqtash N, Sengupta D et al. Ferromagnetic Cr2Te3 nanorods with ultrahigh coercivity. Nanoscale. 2018 Jun 21;10(23):11028-11033. https://doi.org/10.1039/c8nr02272k
Wang, Fang ; Du, Juan ; Sun, Fan ; Sabirianov, Renat F ; Al-Aqtash, Nabil ; Sengupta, Debasis ; Zeng, Hao ; Xu, Xiaohong. / Ferromagnetic Cr2Te3 nanorods with ultrahigh coercivity. In: Nanoscale. 2018 ; Vol. 10, No. 23. pp. 11028-11033.
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