Ultrasound propagation in bond frustrated HgCr2S4 spinel in magnetic fields

Автор(и)

  • V. Felea Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028, Chişinǎu, R. Moldova
  • L. Prodan Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028, Chişinǎu, R. Moldova
  • E. Stefanet Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028, Chişinǎu, R. Moldova
  • P.T. Cong Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany
  • S. Zherlitsyn Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany
  • V. Tsurkan Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028, Chişinǎu, R. Moldova

DOI:

https://doi.org/10.1063/1.4985206

Ключові слова:

geometrical frustration, H–T phase diagram, spinel, magnetization.

Анотація

Ultrasound and magnetization studies of bond frustrated spinel HgCr2S4 are performed as a function of temperature in static magnetic fields. Beside the anharmonic effect, the sound velocity shows pronounced anomaly at the antiferromagnetic (AFM) transition at TN = 23 K with an additional significant increase of the order of 0.5% indicating a strong spin-lattice coupling. External magnetic fields enhance the ferromagnetic (FM) correlations and shift the anomalies to lower temperatures concomitantly with the reduction of the Néel temperature. The constructed H–T phase diagram beside the long-range AFM states reveals the state with induced FM order and regimes with short-range AFM and FM correlations as well.

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Опубліковано

2017-03-20

Як цитувати

(1)
Felea, V.; Prodan, L.; Stefanet, E.; Cong, P.; Zherlitsyn, S.; Tsurkan, V. Ultrasound Propagation in Bond Frustrated HgCr2S4 Spinel in Magnetic Fields. Fiz. Nizk. Temp. 2017, 43, 702-706.

Номер

Том 43 № 5 (2017)

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