The effect of field cooling on a spin-chiral domain structure in a magnetoelectric helimagnet Ba0.5Sr1.5Zn2Fe12O22

Hiraoka, Yoshiki; Tanaka, Yoshikazu; Oura, M.; Wakabayashi, Yusuke; Kimura, T.

doi:10.1016/j.jmmm.2015.02.028

Cited by 14 publications

(3 citation statements)

References 23 publications

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“…According to the recent resonant X-ray microdiffraction experiment with circular polarization, the average size of spin-helicity domain for BSZFO is in the order of ∼100 µm. 31,32 On the other hand, the magnon decay length in insulating materials often reaches several centimeters as reported for YIG, 5 which implies that the spin-wave spin current interacting with the Pt layer indeed passes through the spin-helicity domain walls in the present compound. To fully testify this scenario, further experiment associated with coherent magnon transport using magnetic resonance technique would be useful.…”

Section: (D) and (E))supporting

confidence: 54%

Thermal generation of spin current in a multiferroic helimagnet

et al. 2016

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We report the experimental observation of longitudinal spin Seebeck effect in a multiferroic helimagnet Ba 0.5 Sr 1.5 Zn 2 Fe 12 O 22 . Temperature gradient applied normal to Ba 0.5 Sr 1.5 Zn 2 Fe 12 O 22 /Pt interface generates inverse spin Hall voltage of spin current origin in Pt, whose magnitude was found to be proportional to bulk magnetization of Ba 0.5 Sr 1.5 Zn 2 Fe 12 O 22 even through the successive magnetic transitions among various helimagnetic and ferrimagnetic phases. This finding demonstrates that the helimagnetic spin wave can be an effective carrier of spin current. By controlling the population ratio of spin-helicity domains characterized by clockwise/counter-clockwise manner of spin rotation with use of poling electric field in the ferroelectric helimagnetic phase, we found that spin-helicity domain distribution does not affect the magnitude of spin current injected into Pt. The results suggest that the spin-wave spin current is rather robust against the spin-helicity domain wall, unlike the case with the conventional ferromagnetic domain wall.

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Section: (D) and (E))supporting

confidence: 54%

Thermal generation of spin current in a multiferroic helimagnet

et al. 2016

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“…In this article, we present the results of a Resonant X-ray Diffraction (RXD) experiment designed to study the magnetoelectric domain switching in BSMFO. Historically, resonant X-ray microdiffraction (spatially resolved diffraction) has been employed to determine the real-space distribution of chirality domains, such as those of the zero-field, proper-screw phases of the Y-type hexaferrites, which are not magnetoelectric [9][10][11]. Here, we demonstrate that this technique is also sensitive to the magnetic polarity of the field-induced polar phases, even in the absence of net chirality.…”

Section: Introductionmentioning

confidence: 83%

Magnetoelectric domains and their switching mechanism in a Y -type hexaferrite

et al. 2019

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By employing resonant X-ray microdiffraction, we image the magnetisation and magnetic polarity domains of the Y-type hexaferrite Ba 0.5 Sr 1.5 Mg 2 Fe 12 O 22 . We show that the magnetic polarity domain structure can be controlled by both magnetic and electric fields, and that full inversion of these domains can be achieved simply by reversal of an applied magnetic field in the absence of an electric field bias. Furthermore, we demonstrate that the diffraction intensity measured in different X-ray polarisation channels cannot be reproduced by the accepted model for the polar magnetic structure, known as the 2-fan transverse conical (TC) model. We propose a modification to this model, which achieves good quantitative agreement with all of our data. We show that the deviations from the TC model are large, and may be the result of an internal magnetic chirality, most likely inherited from the parent helical (non-polar) phase. arXiv:1904.01278v2 [cond-mat.mtrl-sci]

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“…Nonlinear ME effects, such as the reversal of the ferromagnetic component with the electric field [15,16], the electric control of the direction of the magnetization [17,18], and the electric control of the spin chirality [19][20][21], were reported so far. In these ME effects, the magnetic domain is aligned by the electric field [22,23], and the dielectric energy of the system does not change. Recently the ME effect with the change of the anisotropy energy has been discussed in Cu 2 OSeO 3 where the nanoscale skyrmion lattice composed of many magnetic moments is rotated by E and oscillating H [24].…”

Section: Introductionmentioning

confidence: 99%

Continuous control of local magnetic moment by applied electric field in multiferroicsBa2CoGe2O7

et al. 2016

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Ba 2 CoGe 2 O 7 exhibits a collinear-antiferromagnetic structure with the easy axis along 100 directions and an antiferroelectric order with the polarization axis along the [001] direction. By applying the electric field the magnetic moment rotates from 100 to [110] directions and, simultaneously, the antiferroelectric state changes to the ferroelectric state gradually. This magnetoelectric effect, i.e., continuous control of the local magnetic moment by the electric field, is quantitatively explained by the Hamiltonian including the dielectric energy.

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The effect of field cooling on a spin-chiral domain structure in a magnetoelectric helimagnet Ba0.5Sr1.5Zn2Fe12O22

Cited by 14 publications

References 23 publications

Thermal generation of spin current in a multiferroic helimagnet

Thermal generation of spin current in a multiferroic helimagnet

Magnetoelectric domains and their switching mechanism in a Y -type hexaferrite

Continuous control of local magnetic moment by applied electric field in multiferroicsBa2CoGe2O7

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