Magnetic-field dependence of the ferroelectric polarization and spin-lattice coupling in multiferroic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Mn</mml:mi><mml:mi mathvariant="normal">W</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>

Taniguchi, Kouji; Abe, Nobuyuki; Sagayama, Hajime; Ohtani, Shigemori; Takenobu, Taishi; Iwasa, Yoshihiro; Arima, T.

doi:10.1103/physrevb.77.064408

Cited by 76 publications

(59 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9,11,12 One of the advantages of studying MnWO 4 is that it has only one kind of magnetic ion (Mn 2+ ), whereas other multiferroic oxides usually have multiple magnetic ions, thus hindering investigation of their magnetic properties. With the advantage of single magnetic ion, we are provided with a clear window into the electromagnetic coupling behavior and are able to make simple analyses of the magnetic field dependence and SOC effects.…”

Section: 10mentioning

confidence: 99%

Electronic structure and anomalous band-edge absorption feature in multiferroicMnWO4: An optical spectroscopic study

et al. 2010

Self Cite

View full text Add to dashboard Cite

We investigated the electronic structure and lattice dynamics of multiferroic MnWO 4 by optical spectroscopy. With variation of polarization, temperature, and magnetic field, we obtained optical responses over a wide range of photon energies. The electronic structure of MnWO 4 near to the Fermi level was examined, with inter-band transitions identified in optical conductivity spectra above a band-gap of 2.5 eV. As for the lattice dynamics, we identified all the infrared transverse optical phonon modes available according to the group-theory analysis. Although we did not observe much change in global electronic structure across the phase transition temperatures, an optical absorption at around 2.2 eV showed an evident change depending upon the spin configuration and magnetic field. The behavior of this band-edge absorption indicates that spin-orbit coupling plays an important role in multiferroic MnWO 4 .

show abstract

Section: 10mentioning

confidence: 99%

Electronic structure and anomalous band-edge absorption feature in multiferroicMnWO4: An optical spectroscopic study

et al. 2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…[4][5][6] Recent work has demonstrated that the ferroelectric and spin-spiral orders coexist and are intimately coupled in this material. [4][5][6][7][8][9][10][11] MnWO 4 undergoes three magnetic phase transitions in zero magnetic field below 14 K (Figure 1). 12 With decreasing temperature, MnWO 4 first transforms from a paramagnetic (PM) state to a collinear spin sinusoidal state (AF3) at T N ≈ 13.5 K, then to a tilted elliptical spiral spin state (AF2) at T 2 ≈ 12.3 K, and eventually to a up-up-down-down collinear spin structure (AF1) at T 1 ≈ 8.0 K. The magnetic structures of the AF3 and AF2 states are ICM to the lattice spacing with propagation vector k = (-0.214, 0.5, 0.457), while that of the AF1 state is commensurate (CM) with propagation vector k = (-0.25, 0.5, 0.5).…”

Section: Introductionmentioning

confidence: 99%

Effect of Nonmagnetic Substituents Mg and Zn on the Phase Competition in the Multiferroic Antiferromagnet MnWO₄

et al. 2009

View full text Add to dashboard Cite

The effects of substituting nonmagnetic Mg 2+ and Zn 2+ ions for the Mn 2+ (S = 5/2) ions on the structural, magnetic and dielectric properties of the multiferroic frustrated antiferromagnet MnWO 4 were investigated. Polycrystalline samples of Mn 1-x Mg x WO 4 and Mn 1-x Zn x WO 4 (0 ≤ x ≤ 0.3) solid solutions were prepared by a solid-state route and characterized via X-ray and neutron diffraction, magnetization, and dielectric permittivity measurements. Mg and Zn substitutions give rise to very similar effects. The Néel temperature T N , the AF3-to-AF2 magnetic phase transition temperature T 2 , and the critical ferroelectric temperature T c = T 2 of MnWO 4 are reduced upon the nonmagnetic doping.At the lowest temperature (T = 1.5 K), the incommensurate magnetic structure for x(Mg) = 0.15 and x(Zn) = 0.15 corresponds to either a sinusoidal spin arrangement or an elliptical spin-spiral phase similar to the polar AF2 structure observed in MnWO 4 . These findings were discussed by considering the effects of the Mg and Zn substitutions on the crystal lattice and on the spin exchange network of MnWO 4 .

show abstract

“…The remanent polarization of about 39 C / m 2 at 10 K agrees well with the reported forced polarization in this material. 11,12 Remanent polarization ͑Fig. 2͒ and ferroelectric coercive force ͑inset of Fig.…”

mentioning

confidence: 99%

Effect of magnetic field and temperature on the ferroelectric loop inMnWO4

Kundys
¹
,

Simon
²
,

Martin
³

2008

Phys. Rev. B

46
5
37
0

View full text Add to dashboard Cite

The ferroelectric properties of MnWO 4 single crystal have been investigated. Despite a relatively low remanent polarization, we show that the sample is ferroelectric. The shape of the ferroelectric loop of MnWO 4 strongly depends on magnetic field and temperature. While its dependence does not directly correlate with the magnetocapacitance effect before the paraelectric transition, the effect of magnetic field on the ferroelectric polarization loop supports magnetoelectric coupling.PACS number͑s͒: 72.55.ϩs, 75.80.ϩq, 75.30.Kz The mutually exclusive nature of magnetism and electric polarization phenomena in most solids 1,2 has recently attracted attention in the scientific community. This is essentially due to both the basic physics challenges posed and the possible magnetoelectric ͑ME͒ applications for memory storage and electric field-controlled magnetic sensors. The idea of having the two order parameters ͑magnetic and electric͒ at the same temperature and magnetically controlled electrical polarization ͑or vice versa͒ has stimulated a vast research of new materials, 3-8 as well as reinvestigation of previously known compounds. 9 It becomes evident that many canted antiferromagnets may develop electric polarization as a result of the overlap of the electronic wave functions and as a result of the spin orbit interaction. 10 Among materials in which magnetoelectric effects have been recently reported, MnWO 4 is a particularly interesting material as the electric polarization in a single crystal may be switched from the b to a direction when a strong magnetic field is applied. 11-14 A similar phenomenon has been observed in rare-earth manganites. 15,16 The antiferromagnetic ͑AF͒ phase transitions of MnWO 4 were already studied a long time ago. 17,18 With decreasing temperature, MnWO 4 undergoes a collinear antiferromagnetic state ͑AF1 phase͒ at T N Ϸ 13.5 K with further transformation to the noncollinear incommensurate antiferromagnetic phase ͑AF2 phase͒ at 12.7 K, and finally to collinear incommensurate antiferromagnetic phase ͑AF3 phase͒ at 7.6 K. Among the three antiferromagnetic states, only the noncollinear one ͑AF2 phase͒ appears to develop an electric polarization that can be explained within the framework of the phenomenological 10,19-21 and microscopic models. 22 Polarity alone, however, does not guarantee ferroelectricity that is sometimes difficult to experimentally demonstrate. 9,23 For example, the reversibility of the electric dipoles could require electric fields larger than the breakdown field, or it might be due to asymmetric irreversible arrangements of the atoms. In this Brief Report, the electric field-induced dipole reversibility ͑ferroelectricity͒ of MnWO 4 is shown, along with the measures of its dependence on magnetic field and temperature. dc ferroelectric measurements were performed in a Physical Property Measurement System ͑PPMS͒ Quantum Design cryostat by using a Keithley 6517A electrometer. The used technique is our adaptation of the already known method, 24 wherein programming te...

show abstract

Magnetic-field dependence of the ferroelectric polarization and spin-lattice coupling in multiferroicMnWO4

Cited by 76 publications

References 23 publications

Electronic structure and anomalous band-edge absorption feature in multiferroicMnWO4: An optical spectroscopic study

Electronic structure and anomalous band-edge absorption feature in multiferroicMnWO4: An optical spectroscopic study

Effect of Nonmagnetic Substituents Mg and Zn on the Phase Competition in the Multiferroic Antiferromagnet MnWO₄

Effect of magnetic field and temperature on the ferroelectric loop inMnWO4

Contact Info

Product

Resources

About

Magnetic-field dependence of the ferroelectric polarization and spin-lattice coupling in multiferroicMnWO4

Cited by 76 publications

References 23 publications

Electronic structure and anomalous band-edge absorption feature in multiferroicMnWO4: An optical spectroscopic study

Electronic structure and anomalous band-edge absorption feature in multiferroicMnWO4: An optical spectroscopic study

Effect of Nonmagnetic Substituents Mg and Zn on the Phase Competition in the Multiferroic Antiferromagnet MnWO4

Effect of magnetic field and temperature on the ferroelectric loop inMnWO4

Contact Info

Product

Resources

About

Effect of Nonmagnetic Substituents Mg and Zn on the Phase Competition in the Multiferroic Antiferromagnet MnWO₄