Magnetic-Field-induced Transitions in Multiferroic TbMnO3 Probed by Resonant

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Physical Review B: Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.78.024429· OSTI ID:960031

Strempfer, J; Bohnenbuck, B; Zegkinoglou, I; Aliouane, N; Landsgesell, S; Zimmermann, M; Argyriou, D

Multiferroic TbMnO3 is investigated using x-ray diffraction in high magnetic fields. Measurements on first and second harmonic structural reflections due to modulations induced by the Mn and Tb magnetic order are presented as function of temperature and field oriented along the a and b-directions of the crystal. The relation to changes in ordering of the rare earth moments in applied field is discussed. Observations below T{sub N}(Tb) without and with applied magnetic field point to a strong interaction of the rare earth order, the Mn moments and the lattice. Also, the incommensurate to commensurate transition of the wave vector at the critical fields is discussed with respect to the Tb and Mn magnetic order and a phase diagram on basis of these observations for magnetic fields H||a and H||b is presented. The observations point to a complicated and delicate magneto-elastic interaction as function of temperature and field.

• Research Organization: Brookhaven National Laboratory (BNL) National Synchrotron Light Source
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 960031
• Report Number(s): BNL--83017-2009-JA
• Journal Information: Physical Review B: Condensed Matter and Materials Physics, Journal Name: Physical Review B: Condensed Matter and Materials Physics Journal Issue: 2 Vol. 78; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CRITICAL FIELD
CRYSTALS
HARMONICS
MAGNETIC FIELDS
PHASE DIAGRAMS
RARE EARTHS
STRONG INTERACTIONS
VECTORS
X-RAY DIFFRACTION
national synchrotron light source