Crystal growth of LiCuVO4: influence of the flux composition and the growth temperature on the stoichiometry and perfection of the crystals

Prokofiev, A.; Vasilyeva, I.G.; Aßmus, W.

doi:10.1016/j.jcrysgro.2004.11.314

Cited by 13 publications

(9 citation statements)

References 12 publications

(13 reference statements)

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“…LiCuVO 4 has an orthorhombically distorted inverse spinel structure of the space group Imma 16 and, on heating, shows peritectic decomposition into CuO and a LiVO 3 -rich melt. For the growth of single crystals there is an access path for compositions LiVO 3 - LiCuVO 4 from 10 to 60 mol% LiCuVO 4 17 , 18 . We identified a starting composition of 35 mol% LiCuVO 4 , a starting temperature of 910 K and a cooling rate of 0.1 K/h as suitable crystal-growth conditions.…”

Section: Resultsmentioning

confidence: 99%

Evidence for polarized nanoregions from the domain dynamics in multiferroic LiCuVO4

Grams

Kopatz

Brüning

et al. 2019

Sci Rep

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LiCuVO4 is a model system of a 1D spin-1/2 chain that enters a planar spin-spiral ground state below its Néel temperature of 2.4 K due to competing nearest and next nearest neighbor interactions. The spin-spiral state is multiferroic with an electric polarization along the a axis which has been proposed to be caused purely by the spin supercurrent mechanism. With external magnetic fields in c direction TN can be suppressed down to 0 K at 7.4 T. Here we report dynamical measurements of the polarization from P(E)-hysteresis loops, magnetic field dependent pyro-current and non-linear dielectric spectroscopy as well as thermal expansion and magnetostriction measurements at very low temperatures. The multiferroic transition is accompanied by strong anomalies in the thermal expansion and magnetostriction coefficients and we find slow switching times of electric domain reversal. Both observations suggest a sizable magnetoelastic coupling in LiCuVO4. By analyzing the non-linear polarization dynamics we derive domain sizes in the nm range that are probably caused by Li defects.

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Section: Resultsmentioning

confidence: 99%

Evidence for polarized nanoregions from the domain dynamics in multiferroic LiCuVO4

Grams

Kopatz

Brüning

et al. 2019

Sci Rep

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“…Single crystals of the orthorhombic distorted spinel compound LiCuVO 4 were grown from a LiVO 3 -based flux, as described in detail in Refs. [ 27 , 28 ]. Even a slightly variation in the composition results in different sample properties.…”

Section: Methodsmentioning

confidence: 99%

Multiferroic Hysteresis Loop

2017

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Multiferroics, showing both ferroelectric and magnetic order, are promising candidates for future electronic devices. Especially, the fundamental understanding of ferroelectric switching is of key relevance for further improvements, which however is rarely reported in literature. On a prime example for a spin-driven multiferroic, LiCuVO4, we present an extensive study of the ferroelectric order and the switching behavior as functions of external electric and magnetic fields. From frequency-dependent polarization switching and using the Ishibashi-Orihara theory, we deduce the existence of ferroelectric domains and domain-walls. These have to be related to counterclockwise and clockwise spin-spirals leading to the formation of multiferroic domains. A novel measurement—multiferroic hysteresis loop—is established to analyze the electrical polarization simultaneously as a function of electrical and magnetic fields. This technique allows characterizing the complex coupling between ferroelectric and magnetic order in multiferroic LiCuVO4.

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“…Single crystals of LiCuVO 4 grown by the technique described in Refs. [18,19] have the shape of thin plates with developed ab-planes. The samples were of 1 − 3 mm in ab-plane and 0.2 − 0.3 mm in c-direction.…”

Section: A Technical Details and Methodsmentioning

confidence: 99%

“…2, 3, 6 were measured in arbitrary but the same units, that allows to determine the shift of the magnetic resonance field ∆H R and, using Eqs. (19), (20), to evaluate the electric polarization of the sample. The estimated value of spontaneous polarization along crystallographic axis a is equal to P = 18 ± 4 µC/m 2 .…”

Section: P(h Ementioning

confidence: 99%

Dynamics of the multiferroic LiCuVO4 influenced by electric field

Gotovko,

Marchenko,

Prokofiev

et al. 2021

Preprint

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We present the electron spin resonance study of the influence of an electric field on the low-field multiferroic magnetic state in LiCuVO4. The shift of the magnetic resonance spectra in the electric field has been observed experimentally. Symmetry analysis has been conducted in order to describe the static properties of the magnetic system. The low-frequency dynamics of LiCuVO4 in magnetic and electric fields was considered in the framework of hydrodynamic approach. It was shown that the application of the external electric field leads to the change of the configuration of the magnetic system before and after spin-flop reorientation. Satisfactory agreement was obtained between the results of experimental studies and theoretical consideration.

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Crystal growth of LiCuVO4: influence of the flux composition and the growth temperature on the stoichiometry and perfection of the crystals

Cited by 13 publications

References 12 publications

Evidence for polarized nanoregions from the domain dynamics in multiferroic LiCuVO4

Evidence for polarized nanoregions from the domain dynamics in multiferroic LiCuVO4

Multiferroic Hysteresis Loop

Dynamics of the multiferroic LiCuVO4 influenced by electric field

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