Ultrasound propagation in bond frustrated HgCr₂S₄ spinel in magnetic fields

Ultrasound propagation in bond frustrated HgCr₂S₄ spinel in magnetic fields

Felea, V. ; Prodan, L. ; Stefanet, E. ; Cong, P.T. ; Zherlitsyn, S. ; Tsurkan, V.

Тема: К 70-летию со дня рождения С.Л. Гнатченко

Інший ID: PACS: 43.35.+d, 62.65.+k, 72.55.+s, 75.50.Ee, 75.60.Jk

URI: http://dspace.nbuv.gov.ua/handle/123456789/129493

Посилання: Ultrasound propagation in bond frustrated HgCr₂S₄ spinel in magnetic fields / V. Felea, L. Prodan, E. Stefanet, P.T. Cong, S. Zherlitsyn, V. Tsurkan // Физика низких температур. — 2017. — Т. 43, № 5. — С. 702-706. — Бібліогр.: 27 назв. — англ.

Підтримка: We acknowledge financial support via the institutional project 15.817.02.06F and projects for young researchers 15.819.02.01F. This work was partially supported by DFG via SFB 1143 and via the collaborative research center TRR 80 “From Electronic Correlations to Functionality” (Augsburg, Munich, and Stuttgart). We acknowledge the support of the HLD at HZDR, a member of the European Magnetic Field Laboratory (EMFL).

Дата: 2017

Завантажень: 493

Ultrasound propagation in bond frustrated HgCr₂S₄ spinel in magnetic fields

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.

Показати повний запис статті