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首页> 外文期刊>Physica, B. Condensed Matter >Study on CuGe0.9885Si0.0115 is O-3 in high magnetic fields by specific heat measurements
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Study on CuGe0.9885Si0.0115 is O-3 in high magnetic fields by specific heat measurements

机译：通过比热测量研究CuGe0.9885Si0.0115在强磁场中为O-3

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摘要

Specific heat is measured for a single crystal of CuGe1-xSixO3 (x = 0.0115) in magnetic fields up to 14.5 T. In zero field two peaks at similar to 3 and similar to 10 K were observed, suggesting that the coexistence of the antiferromagnetic and spin-Peierls orders are realized. In our previous measurements of specific heat in high-field region around 15 T a small but clear anomaly was observed at similar to 4.2 K for x = 0.01, while a sharp peak was observed at similar to 5 K for x = 0.015, which corresponds to the transition in the magnetic-field-induced phases between M phase and M' phase. They appear very different from each other. In the present study for x = 0.0115 we observe a clear peak at 14.5 T which is just intermediate between those for x = 0.01 and 0.015 in temperature and in size. This systematic change in the transition with varying x shows that these transitions in the high-field phases are of the same kind in this range of x, though it also shows that small change in Si concentration affects the magnetic-field-induced states to a large extent. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 6]
机译：在高达14.5 T的磁场中测量了CuGe1-xSixO3单晶（x = 0.0115）的比热。在零磁场中，观察到两个相似于3 K和相似于10 K的峰，这表明反铁磁和铁磁共存。自旋Peierls订单已实现。在我们之前的15 T附近高场区域的比热测量中，对于x = 0.01，在类似于4.2 K处观察到一个小而清晰的异常，而对于x = 0.015，在类似于5 K处观察到了尖锐的峰，这对应于磁场感应相在M相和M'相之间的过渡。它们看起来彼此非常不同。在本研究中，对于x = 0.0115，我们在14.5 T处观察到一个清晰的峰，该峰恰好介于x = 0.01和0.015的温度和尺寸之间。 x随跃迁的这种系统变化表明，在x的此范围内，高磁场相中的这些跃迁是同一类型的，尽管它还表明Si浓度的微小变化会影响磁场感应的态。很大程度上。 （C）2000 Elsevier Science B.V.保留所有权利。 [参考：6]

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