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Single-crystal growth and characterization of antiferromagnetically ordered EuIn2

Journal Article · · Physical Review. B
Here, we report the single crystal growth and characterization of EuIn2, a magnetic topological semimetal candidate according to our density functional theory (DFT) calculations. We present results from electrical resistance, magnetization, Mössbauer spectroscopy, and X-ray resonant magnetic scattering (XRMS) measurements. We observe three magnetic transitions at TN1 ~ 14.2 K, TN2 ~ 12.8 K and TN3 ~ 11 K, signatures of which are consistently seen in anisotropic temperature dependent magnetic susceptibility and electrical resistance data. Mössbauer spectroscopy measurements on ground crystals suggest an incommensurate sinusoidally modulated magnetic structure below the transition at TN1 ~ 14 K, followed by the appearance of higher harmonics in the modulation on further cooling roughly below TN2 ~ 13 K, before the moment distribution squaring up below the lowest transition around TN3 ~ 11 K. XRMS measurements showed the appearance of magnetic Bragg peaks below TN1 ~ 14 K, with a propagation vector of $$τ$$ = ($$τ_h$$, $$\overline{τ}_h$$, 0), with $$τ_h$$ varying with temperature, and showing a jump at TN3 ~ 11 K. The temperature dependence of $$τ_h$$ between ~ 11 K and 14 K shows incommensurate values consistent with the Mössbauer data. XRMS data indicate that $$τ_h$$ remains incommensurate at low temperatures and locks into $$τ_h$$ = 0.3443(1).
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). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-06CH11357; AC02-07CH11358
OSTI ID:
2371694
Alternate ID(s):
OSTI ID: 2474687
Report Number(s):
IS-J--11,354
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 21 Vol. 109; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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