Magnetic structure of the perovskite-like compound TbMnO3

Quézel, S.; Tchéou, F.; Rossat‐Mignod, J.; Quézel, G.; Roudaut, E.

doi:10.1016/0378-4363(77)90740-9

Cited by 166 publications

(135 citation statements)

References 4 publications

Supporting

Mentioning

113

Contrasting

Unclassified

Order By: Relevance

“…Additional XRMS measurements with applied magnetic field H k a and a perpendicular to the scattering plane were performed at the XmaS beam line at the ESRF, Grenoble. Our single crystal neutron diffraction experiments below T Mn N largely confirm previous measurements [2,18,19]. We find a set of magnetic satellites in Brillouin zones (hkl) with extinction conditions h k even, l odd that arise exclusively from the ordering of Mn spins.…”

supporting

confidence: 87%

Coupling of Frustrated Ising Spins to the Magnetic Cycloid in MultiferroicTbMnO3

Prokhnenko¹,

Feyerherm

Mostovoy

et al. 2007

Phys. Rev. Lett.

View full text Add to dashboard Cite

Coupling of frustrated ising spins to the magnetic cycloid in multiferroic TbMnO3Prokhnenko, O.; Feyerherm, R.; Mostovoy, Maxim; Aliouane, N.; Dudzik, E.; Maljuk, A.; Argyriou, D. N. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum.

show abstract

supporting

confidence: 87%

Coupling of Frustrated Ising Spins to the Magnetic Cycloid in MultiferroicTbMnO3

Prokhnenko¹,

Feyerherm

Mostovoy

et al. 2007

Phys. Rev. Lett.

View full text Add to dashboard Cite

show abstract

“…Assuming theoretical 9 µ B /Tb 3+ , that would correspond to 36 • canting to a-axis in good agreement with reported data on Tbanisotropy. 28,29 Much less pronounced second transition corresponds to the flop of the electric polarization from P c to P a that is presumably caused by the flop of Mn cycloidal plane. 5,30 Both meta-magnetic transitions are observed in x = 4% and x = 10% samples.…”

Section: B Magnetic and Dielectric Propertiesmentioning

confidence: 99%

Ga substitution as an effective variation of Mn-Tb coupling in multiferroicTbMnO3

et al. 2010

View full text Add to dashboard Cite

Ga for Mn substitution in multiferroic TbMnO3 has been performed in order to study the influence of Mn-magnetic ordering on the Tb-magnetic sublattice. Complete characterization of TbMn1−xGaxO3 (x = 0, 0.04, 0.1) samples, including magnetization, impedance spectroscopy, and x-ray resonant scattering and neutron diffraction on powder and single crystals has been carried out. We found that keeping the same crystal structure for all compositions, Ga for Mn substitution leads to the linear decrease of T Mn N and τ Mn , reflecting the reduction of the exchange interactions strength JMn−Mn and the change of the Mn-O-Mn bond angles. At the same time, a strong suppression of both the induced and the separate Tb-magnetic ordering has been observed. This behavior unambiguously prove that the exchange fields J Mn−Tb have a strong influence on the Tb-magnetic ordering in the full temperature range below T Mn N and actually stabilize the Tb-magnetic ground state.

show abstract

“…Below TN2 = ~27 K, the spins in the bc-plane order into a spin cycloid creating a spontaneous ferroelectric polarization directed along the c axis. At temperatures below 27 K the magnetic-ordering wavevector locks in at q = 0.287 [3,7].…”

Section: Introductionmentioning

confidence: 99%

“…One of these derivatives, TbMnO3, exhibits multiferroicity below 27 K [2], and serves as a prototypical example of chiral spin order. The nature of the long range spin-cycloid ordering under equilibrium conditions has been studied and clarified using both neutron scattering [3][4][5][6] and resonant x-ray diffraction [7][8][9]. In the latter technique, soft X-rays tuned to the Mn L2 edge at 652 eV show a strong resonant enhancement giving direct information about the long-range spin order.…”

Section: Introductionmentioning

confidence: 99%

Magnetic order dynamics in optically excited multiferroicTbMnO3

Johnson¹,

Kubacka²,

Hoffmann³

et al. 2015

Phys. Rev. B

View full text Add to dashboard Cite

We performed ultrafast time-resolved near-infrared pump, resonant soft X-ray diffraction probe measurements to investigate the coupling between the photoexcited electronic system and the spin cycloid magnetic order in multiferroic TbMnO3 at low temperatures. We observe melting of the long range antiferromagnetic order at low excitation fluences with a decay time constant of 22.3 ± 1.1 ps, which is much slower than the ~1 ps melting times previously observed in other systems. To explain the data we propose a simple model of the melting process where the pump laser pulse directly excites the electronic system, which then leads to an increase in the effective temperature of the spin system via a slower relaxation mechanism. Despite this apparent increase in the effective spin temperature, we do not observe changes in the wavevector q of the antiferromagnetic spin order that would typically correlate with an increase in temperature under equilibrium conditions. We suggest that this behavior results from the extremely low magnon group velocity that hinders a change in the spin-spiral wavevector on these time scales.2

show abstract

Magnetic structure of the perovskite-like compound TbMnO3

Cited by 166 publications

References 4 publications

Coupling of Frustrated Ising Spins to the Magnetic Cycloid in MultiferroicTbMnO3

Coupling of Frustrated Ising Spins to the Magnetic Cycloid in MultiferroicTbMnO3

Ga substitution as an effective variation of Mn-Tb coupling in multiferroicTbMnO3

Magnetic order dynamics in optically excited multiferroicTbMnO3

Contact Info

Product

Resources

About