Effect of nickel substitution on magnetism in the layered van der Waals ferromagnet Fe3GeTe2

Drachuck, Gil; Salman, Zaher; Masters, Morgan W.; Taufour, Valentin; Lamichhane, Tej N.; Lin, Qisheng; Straszheim, Warren E.; Bud'ko, Sergey L.; Canfield, Paul C.

doi:10.1103/PhysRevB.98.144434

Effect of nickel substitution on magnetism in the layered van der Waals ferromagnet Fe₃GeTe₂

Journal Article · Wed Oct 24 00:00:00 EDT 2018 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.98.144434· OSTI ID:1481861

Drachuck, Gil ^[1]; Salman, Zaher ^[2]; Masters, Morgan W. ^[3]; Taufour, Valentin ^[4]; Lamichhane, Tej N. ^[1]; Lin, Qisheng ^[1]; Straszheim, Warren E. ^[1]; Bud'ko, Sergey L. ^[1]; Canfield, Paul C. ^[1]

Ames Lab. and Iowa State Univ., Ames, IA (United States)
Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Iowa State Univ., Ames, IA (United States)
Iowa State Univ., Ames, IA (United States); Univ. of California, Davis, CA (United States)

We have grown a series of nickel-substituted single crystals of the layered ferromagnet (FM) Fe₃GeTe₂. The large single-crystalline samples of (Fe_1–xNi_x)₃GeTe₂ with x = 0–0.84 were characterized with single-crystal x-ray diffraction, magnetic susceptibility, electrical resistance, and muon spin spectroscopy. We find Fe can be continuously substituted with Ni with only a minor structural variation. In addition, FM order is suppressed from T_C = 212K for x = 0 down to T_C = 50K for x=0.3, which is accompanied by a strong suppression of saturated and effective moments, and Curie-Weiss temperature. Beyond x=0.3, the FM order is continuously smeared into a FM cluster-glass phase, with a nearly full magnetic volume fraction. Here, we attribute the observed change in the nature of magnetic order to the intrinsically disordered structure of Fe₃GeTe₂ and subsequent dilution effects from the Ni substitution.

View Accepted Manuscript (DOE)

Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI ID:: 1481861

Alternate ID(s):: OSTI ID: 1478688

Report Number(s):: IS-J--9806

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 14 Vol. 98; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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