| Autor: |
Troyanchuk, I. O., Bushinsky, M. V., Chobot, A. N., Mantytskaya, O. S., Pushkarev, N. V., Szymczak, R. |
| Předmět: |
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| Zdroj: |
Journal of Experimental & Theoretical Physics; Aug2008, Vol. 107 Issue 2, p245-250, 6p, 6 Graphs |
| Abstrakt: |
Solid solutions of Bi1 − x A x (Fe1 − x/2Nb x/2)O3, where A = Ca, Ba, and Pb, are obtained and their crystal structure and magnetic properties are investigated. It is shown that for A = Ca and x ≈ 0.15, the symmetry of the unit cell changes from rhombohedral (space group R3 c) to orthorhombic ( Pbnm). The transformation leads to the emergence of spontaneous magnetization due to the Dzyaloshinskii-Moriya interaction. Solid solutions with A = Pb remain rhombohedral up to a concentration of x = 0.3. Spontaneous magnetization sharply increases in the compound with x ≈ 1 at low temperatures and is due to the formation of the spin-glass component. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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