Transport and magnetic properties in the Dy1−xCaxVO3 ceramics

Zhao, Baoyu; Huang, Yanan; Yang, Jie; Dai, Dongqin; Dai, Jianming; Sun, Yan

doi:10.1016/j.jallcom.2013.01.075

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“…25 It is worth noting that the RVO 3 vanadates reveal a weak specific heat at low temperatures (around 10 K). [26][27][28] Consequently, a large adiabatic temperature change is expected in HoVO 3 . According to Refs.…”

Section: Methodsmentioning

confidence: 99%

Observation of large refrigerant capacity in the HoVO3 vanadate single crystal

Ballı

Roberge

Jandl

et al. 2015

Journal of Applied Physics

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The HoVO 3 orthovanadate undergoes a large negative and conventional magnetocaloric effects around 4 K and 15 K, respectively. The partly overlapping of the magnetic transition at 15 K and the structural transition occurring at 40 K, as well as the large magnetization, give rise to a giant refrigerant capacity without hysteresis loss. For a magnetic field variation of 7 T, the refrigerant capacity is evaluated to be 620 J/kg, which is larger than that for any known RMnO 3 manganite. These results should inspire and open new ways for the improvement of magnetocaloric properties of ABO 3 type-oxides. V

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