科研之友
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摘要
Low-temperature ultrasound velocity measurements are presented on the frustrated spin system SrDy2O4 that allow us to define high-resolution phase diagrams with the magnetic field applied along all three principal axes. For H parallel to b, a region of field-induced long-range order is delimited by a dome of first-order phase transitions. An unusual magnetization process is observed with significant irreversibility at very low temperatures when passing between the low-field spin liquid phase and the long-range ordered phase which we attribute to large energy barriers. For H parallel to c, the system appears to remain effectively one dimensional, exhibiting two transitions as a function of magnetic field, but no finite-temperature long-range order.
- 出版日期2016-2-12
