Anisotropic magnetostriction in Tb0.27Dy0.73Fe1.95
| Autor: | J. P. Teter, Arthur E. Clark, O.D. McMasters |
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| Rok vydání: | 1987 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 61:3787-3789 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.338646 |
| Popis: | The magnetostriction of a single crystal of Tb0.27Dy0.73Fe1.95 grown by the Bridgman technique was measured over the temperature range of magnetic anisotropy compensation (300–330 K). Using a growth rate of 3 cm/h, twinned dendrites were suppressed. We looked for, but found no evidence of, modification of the cubic structure by the resulting cellular [112] growth. Magnetostriction measurements along all four 〈111〉 axis are nearly identical. However, the magnetostriction is highly anisotropic, with λ100/λ111=0.06±0.02 at 300 K. The effects of this large magnetostriction anistropy are discussed. Of particular importance is the magnetostriction along nonprincipal axes. Here we find that the magnetization direction for maximum strain is not collinear with the strain measurement direction. Measurements along the growth [112] direction revealed the maximum magnetostriction with the magnetization 14.75° from [112]. Expressions which relate the direction of magnetization for maximum strain to the measurement di... |
| Databáze: | OpenAIRE |
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