ABSTRACT High-temperature series for the magnetic susceptibility and hypersusceptibility of the Heisenberg ferromagnet have been extended to 14th order in for four common lattices. Hence improved estimates have been deduced for the critical points, (fcc), 0.3968(2) (bcc), 0.596(1) (sc), 1.124(2) (diamond), as well as for the critical exponents, and . The latter are distinct from the respective values for the classical Heisenberg model, and .

中文翻译：

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Spin-Heisenberg 铁磁体的扩展高温系列

摘要 海森堡铁磁体的磁化率和超磁化率的高温级数已扩展到四种常见晶格的 14 阶。因此，已经对临界点 (fcc)、0.3968(2) (bcc)、0.596(1) (sc)、1.124(2)（菱形）以及临界指数和 推导出了改进的估计值。后者与经典海森堡模型的各自值不同，并且 。