Department of Physics and Astronomy, Materials Physics Division, Uppsala University, Box 516, 751 20 Uppsala, Sweden.
J Phys Condens Matter. 2010 Jun 16;22(23):236004. doi: 10.1088/0953-8984/22/23/236004. Epub 2010 May 26.
We address the dimensionality aspects of the magnetic ordering in δ-doped Pd(Fe) structures. The key property we investigate, via magneto-optic Kerr measurements, is the magnetization induced by iron in palladium, over a wide temperature range 5 K < T < 300 K. The dimensional crossover we observe cannot be rationalized on the basis of structural considerations alone, since we find the dimensionality of the low temperature and of the critical region can differ. We discuss the crossover in terms of the temperature dependence of the magnon modes, giving rise to lower dimensionality at low temperatures.
我们研究了 δ 掺杂 Pd(Fe) 结构中磁有序的维度方面。我们通过磁光克尔测量研究的关键性质是在很宽的温度范围 5 K < T < 300 K 内，钯中铁引起的磁化强度。我们观察到的维度交叉不能仅基于结构考虑来合理化，因为我们发现低温和临界区域的维度可以不同。我们根据磁子模式的温度依赖性讨论了交叉现象，这导致低温下的低维性。
