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引用次数: 0
摘要
对于一种著名的、被广泛研究的中间价化合物 YbB12，在氦气压力 P 高达 2 千巴、温度固定为 78 和 300 K 的条件下，使用摆锤式磁力计对压力对磁感应强度 χ(P) 的影响进行了实验研究。测量结果表明，在压力作用下，磁感应强度略有增加，这与其他具有中间价镱离子的镱化合物的类似文献数据一致。根据对实验数据的模型分析，首次估算出了 YbB12 中镱价的压力导数，其值符合稀土化合物在压力下表现出中间价的一般趋势。
For one of the famous and widely investigated intermediate valence compound YbB12, the experimental studies of the pressure effect on magnetic susceptibility χ(P) were carried out under helium gas pressure P up to 2 kbar at fixed temperatures 78 and 300 K using a pendulum type magnetometer. The measurements show a slight increase in susceptibility under pressure, which is consistent in sign with similar literature data for other ytterbium compounds with intermediate valence of Yb ions. Based on a model analysis of experimental data, the pressure derivative of Yb valence in YbB12 was estimated for the first time, the value of which is in line with the general trend of the valence behavior under pressure in rare earth compounds exhibiting intermediate valence.
期刊介绍：
Guided by an international editorial board, Low Temperature Physics (LTP) communicates the results of important experimental and theoretical studies conducted at low temperatures. LTP offers key work in such areas as superconductivity, magnetism, lattice dynamics, quantum liquids and crystals, cryocrystals, low-dimensional and disordered systems, electronic properties of normal metals and alloys, and critical phenomena. The journal publishes original articles on new experimental and theoretical results as well as review articles, brief communications, memoirs, and biographies.
Low Temperature Physics, a translation of the copyrighted Journal FIZIKA NIZKIKH TEMPERATUR, is a monthly journal containing English reports of current research in the field of the low temperature physics. The translation began with the 1975 issues. One volume is published annually beginning with the January issues.
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