Magnetostriction measurements of Ni-Zn ferrite single crystals

The magnetostriction constants λ₁₀₀ and λ₁₁₁ of Ni-Zn ferrite Ni_1?xZn_xFe₂O₄ single crystals with x equal to 0, 0.07, 0.17, 0.40 and 0.67 were measured by a three terminal capacitance method from liquid N₂ to room temperatures.The constants λ₁₀₀ and λ₁₁₁ of Ni ferrite at liquid N₂ temperature were ?43.0 × 10^?6 and ?20.1×10^?6 respectively.The magnitude of the constant λ₁₀₀ increased with the increase of Zn concentration and took a maximum at x of about 0.33, while the magnitude of the constant λ₁₁₁ decreased almost linearly with the increase of Zn concentration and then became zero at x about 0.75.