Temperature Dependence of the Forced Magnetostriction of Nickel

Forced longitudinal and transverse magnetostrictions for polycrystalline Ni have been measured by strain gauge technique at temperatures from 200 to 613°K below the Curie point. Results obtained show clearly an anisotropy, so that the forced volume magnetostriction is turned out not to be equal to three times as large as the forced longitudinal magnetstriction. The temperature dependence of the forced volume magnetostriction obtained reliably shows to be positive below \(T/T_{c}{\cong}0.7\) and negative above it. The forced volume magnetostriction at 0°K, (∂ω/∂ H ) 0 =1.4×10 -10 Oe -1 , and the change of the Curie point with pressure, ∂ T c /∂ p =3.2×10 -4 deg/bar, are estimated thermodynamically and agree with Kondorsky's results and with Patrick's, respectively. A special attension is given to an anomalous thermal expansion near the Curie point.

[1]  H. Fujiwara,et al.  Effect of Hydrostatic Pressure on the Curie Temperature of Ni and Cu-Ni Alloys , 1967 .

[2]  R. E. Pawel,et al.  Specific heat contributions of the ferromagnetic transition in nickel and nickel-copper alloys☆ , 1965 .

[3]  G. D. Vries,et al.  Forced magnetostriction and its temperature-dependence of binary alloys between iron, cobalt and nickel , 1965 .

[4]  D. Bloch,et al.  Magnetic Properties under Pressure of Some Transition Metal Alloys , 1965 .

[5]  L. Alberts,et al.  The forced magnetostriction in nickel , 1964 .

[6]  H. Fujiwara,et al.  Temperature Dependence of Pressure Effect on the Saturation Moment in Fe and Ni , 1963 .

[7]  T. Wakiyama,et al.  Magnetostriction and Anomalous Thermal Expansion of Single Crystals of Gadolinium , 1963 .

[8]  E. Wohlfarth.  High magnetic field effects in ferromagnetic metals , 1962 .

[9]  Yoji Nakamura,et al.  Volume Magnetostriction in Nickel-Iron Alloys , 1961 .

[10]  J. Kouvel,et al.  Magnetization of Iron‐Nickel Alloys Under Hydrostatic Pressure , 1961 .

[11]  R. Gersdorf.  Uniform and non-uniform form effect in magnetostriction , 1960 .

[12]  R. C. Hall.  Forced Magnetostriction of Nickel , 1959 .

[13]  H. Takaki,et al.  A Note on the Magnetoresistance Effect of Strain Gauge Wire , 1958 .

[14]  T. Tsuji.  The Temperature Dependence of Forced Magnetostriction , 1958 .

[15]  L. Patrick.  The Change of Ferromagnetic Curie Points with Hydrostatic Pressure , 1954 .

[16]  R. Smoluchowski,et al.  Magnetostriction and Order-Disorder , 1949 .

[17]  C. Williams.  Thermal Expansion and the Ferromagnetic Change in Volume of Nickel , 1934 .