Magnetoelectric and Raman spectroscopic studies of monocrystalline MnC r2 O4

G. T. Lin, Y. Q. Wang, X. Luo, J. Ma, Houlong Zhuang, D. Qian, L. H. Yin, F. C. Chen, J. Yan, R. R. Zhang, S. L. Zhang, W. Tong, W. H. Song, P. Tong, X. B. Zhu, Y. P. Sun

Research output: Contribution to journalArticle

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Abstract

MnCr2O4 that exhibits spin frustration and complex spiral spin order is of great interest from both fundamental as well as application-oriented perspectives. Unlike CoCr2O4, whose ground state presents the coexistence of commensurate spiral spin order (CSSO) and ferroelectric order, MnCr2O4 shows no multiferroicity. One reason is that the spiral spin order is highly sensitive to the oxygen concentration in MnCr2O4. Here, we have successfully grown high-quality single-crystalline MnCr2O4 by the chemical vapor transport method. We observe a first-order magnetic transition from the incommensurate spiral spin order (ICSSO) at 19.4 K to the CSSO at 17.4 K. This magnetic transition is verified by magnetization, specific heat, and magnetoelectric measurements, which also confirm that the ground state exhibits the coexistence of the CSSO and magnetoelectricity below 17.4 K. Interestingly, the temperature evolution of Raman spectra between 5.4 and 300 K suggests that the structure remains the same. We also find that the phase-transition temperature of the CSSO decreases as applied magnetic field increases up to 45 kOe.

Original languageEnglish (US)
Article number064405
JournalPhysical Review B
Volume97
Issue number6
DOIs
StatePublished - Feb 12 2018

Fingerprint

Ground state
Superconducting transition temperature
Ferroelectric materials
Specific heat
Raman scattering
Magnetization
Phase transitions
Vapors
Magnetic fields
Oxygen
Crystalline materials
Temperature
ground state
frustration
transition temperature
specific heat
vapors
Raman spectra
magnetization
oxygen

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Magnetoelectric and Raman spectroscopic studies of monocrystalline MnC r2 O4. / Lin, G. T.; Wang, Y. Q.; Luo, X.; Ma, J.; Zhuang, Houlong; Qian, D.; Yin, L. H.; Chen, F. C.; Yan, J.; Zhang, R. R.; Zhang, S. L.; Tong, W.; Song, W. H.; Tong, P.; Zhu, X. B.; Sun, Y. P.

In: Physical Review B, Vol. 97, No. 6, 064405, 12.02.2018.

Research output: Contribution to journalArticle

Lin, GT, Wang, YQ, Luo, X, Ma, J, Zhuang, H, Qian, D, Yin, LH, Chen, FC, Yan, J, Zhang, RR, Zhang, SL, Tong, W, Song, WH, Tong, P, Zhu, XB & Sun, YP 2018, 'Magnetoelectric and Raman spectroscopic studies of monocrystalline MnC r2 O4', Physical Review B, vol. 97, no. 6, 064405. https://doi.org/10.1103/PhysRevB.97.064405
Lin, G. T. ; Wang, Y. Q. ; Luo, X. ; Ma, J. ; Zhuang, Houlong ; Qian, D. ; Yin, L. H. ; Chen, F. C. ; Yan, J. ; Zhang, R. R. ; Zhang, S. L. ; Tong, W. ; Song, W. H. ; Tong, P. ; Zhu, X. B. ; Sun, Y. P. / Magnetoelectric and Raman spectroscopic studies of monocrystalline MnC r2 O4. In: Physical Review B. 2018 ; Vol. 97, No. 6.
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