Methods of dilatometric investigations under extreme conditions and the case of spin-ice compounds

Doerr, M.; Granovsky, S.A.; Rotter, Martin; Stöter, T.; Wang, Z. S.; Жерлицын, С.; Wosnitza, J.

doi:10.1088/1742-6596/903/1/012004

Cited by 2 publications

(1 citation statement)

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“…This behavior is similar to the longitudinal MS effects reported in other Ho 3+ -containing oxides such as HoMnO 3 (40 ppm), Ho 2 Ti 2 O 7 (160 ppm), and HoMn 2 O 5 (1800 ppm). 35,52,53 Moreover, the MS effect looks unsaturated with the field up to 9 T, and a larger value is expected at higher magnetic fields. Since the chromium oxides usually show smaller deformations with weak MS effects, 54 the anisotropic Ho 3+ thus would dominate the large negative MS effects in HoCrO 4 .…”

Section: Resultsmentioning

confidence: 99%

Magnetoelectric and Magnetostrictive Effects in Scheelite-Type HoCrO₄

et al. 2022

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Scheelite-type HoCrO4 was prepared by treating the ambient-pressure zircon-type precursor phase under 8 GPa and 700 K. A long-range antiferromagnetic phase transition is found to occur at T N ≈ 23 K due to the spin order of Ho3+ and Cr5+ magnetic ions. However, the antiferromagnetic ground state is sensitive to an external magnetic field and a moderate field of about 1.1 T can induce a metamagnetic transition, giving rise to the presence of a large magnetization up to 8.5 μB/f.u. at 2 K and 7 T. Considerable linear magnetoelectric effect is observed in the antiferromagnetic state, while the induced electric polarization experiences a sharp increase near the critical field of the metamagnetic transition. Ferromagnetism and ferroelectricity thus rarely coexist under higher magnetic fields in scheelite-type HoCrO4. Moreover, a magnetic field also plays an important role in the longitudinal constriction of HoCrO4, and a significant magnetostrictive effect with a value of up to 300 ppm is observed at 2 K and 9 T, which can be attributed to the strong anisotropy of the rare-earth Ho3+ ion. Possible coupling between magnetoelectric and magnetoelastic effects is discussed.

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Section: Resultsmentioning

confidence: 99%