2022年10月17日 · However, the domination of magnetic behavior over the thermal expansion of magnetic compounds makes it difficult to display ZTE at high temperatures. Herein, we report a high-temperature ZTE in a Fe-rich HfFe 2+δ compound, whose ZTE operating temperature could reach 583 K, the highest temperature reached by ZTE metal-based compounds ...

本发明涉及合金材料技术领域，具体涉及一种高温零膨胀合金材料及制备方法，所述合金材料的原子表达式为HfFe，0.2＜σ＜0.7，在433～583K温区内，所述合金材料具有整体零热膨胀效应。

此外，实验表明，HfFe 2.5生成 ZTE是由于Fe的磁矩从有序状态转变为无序状态引起的晶格收缩和晶格振动引起的晶格膨胀相互抵消。 该研究不仅报道了一种高温 ZTE 材料，还提供了一种不寻常的方法来调制磁系统以获得高温 ZTE 化合物。

2006年12月21日 · We have studied the new HfFe 6 Ge 6-type HfMn 6 Ge 6 compound by magnetisation measurements, neutron diffraction and band structure calculations. Its magnetic behaviour is very similar to that of ZrMn 6 Ge 6 .

However, the domination of magnetic behavior over the thermal expansion of magnetic compounds makes it difficult to display ZTE at high temperatures. Herein, we report a high-temperature ZTE in a Fe-rich HfFe 2+δ compound, whose ZTE operating temperature could reach 583 K, the highest temperature reached by ZTE metal-based compounds ...

Deformation caused due to the thermal expansion of a material at high temperatures impairs the functioning of the device. Hence, high-temperature zero thermal expansion (ZTE) compounds are widely used in many high-precision devices. However, the domination of magnetic behavior over the thermal expansion of magnetic compounds makes …

2004年5月1日 · Hyperfine fields in HfFe 2 were measured at 181 Ta probe using the time-differential perturbed angular correlation method (TDPAC) in the temperature range 78–1200 K. Analysis of the spectra revealed two interactions with hyperfine fields of 13.82 (7) T …

1981年7月1日 · Amorphous TiFe, ZrFe and HfFe alloys prepared by low temperature implantation of about 10 at% Fe were found to have superconducting transition temperatures, T c, enhanced above the values of the pure crystalline elements. In addition, T c = 2.6 K for TiFe is about 1 K higher than T c of the equivalent amorphous TiCu alloy.

2006年5月5日 · The magnetic properties and hyperfine interaction parameters for Laves phase HfFe 2 with C14 type structure are studied using SQUID magnetometer and Mössbauer measurement. The saturation magnetization, remanent magnetization, coercive field, magnetic moment per unit formula and the hyperfine magnetic field at Fe site are reported.

High-Temperature Zero Thermal Expansion in HfFe 2+δ from Added Ferromagnetic Paths Deformation caused due to the thermal expansion of a material at high temperatures impairs the functioning of the device.