Spontaneous magnetostriction in the Gd-Y system: analysis of phase transformations

Spontaneous magnetostriction in the Gd-Y system: analysis of phase transformations

Beznosov, A.B. ; Fertman, E.L. ; Eremenko, V.V. ; Pal-Val, P.P. ; Popov, V.P. ; Chebotayev, N.N.

Тема: Специальный выпуск Низкотемпеpатуpная магнитостpикция магнетиков и свеpхпpоводников Под редакцией В. В. Еременко и В. А. Сиренко

Інший ID: PACS: 75.30.Kz, 75.50.√y

URI: http://dspace.nbuv.gov.ua/handle/123456789/130023

Посилання: Spontaneous magnetostriction in the Gd-Y system: analysis of phase transformations / A.B. Beznosov, E.L. Fertman, V.V. Eremenko, P.P. Pal-Val, V.P. Popov, N.N. Chebotayev // Физика низких температур. — 2001. — Т. 27, № 4. — С. 430-435. — Бібліогр.: 20 назв. — англ.

Підтримка: A. B. B. thanks NATO ASI «Modern Trends in Magnetostriction Study and Application» for the financial Support.

Дата: 2001

Завантажень: 418

Spontaneous magnetostriction in the Gd-Y system: analysis of phase transformations

Анотація:

The transformations of magnetic and lattice subsystems states of Gd₁₀₀₋xYx (x=0, 5.5, 7.5, 10.2) alloys have been studied at temperatures 5-370 K in magnetic fields up to 4 kOe. The temperature dependences of elastic modules, thermal expansion, low field magnetization and magnetic anisotropy parameters were obtained. The linear spontaneous striction ΔL(T)/L=xh² was analized, and the effective order parameters η and magnetostrictive parameters ξ were evaluated for the four magnetic phases (canted ferromagnetic, deforming ferromagnetic helix, ferromagnetic helix, and the ferromagnetic cone, respectively): ξcf=2.2×10⁻⁵, ξdh=- 5.3×10⁻⁵, ξfh=7.1×10⁻⁵, ξfc=1.4×10⁻³.

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