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SPIN COMPLEXES IN FERROMAGNETISM
The spin-wave theory in Heisenberg model of ferromagnetism is investigated with the Holstein - Primakoff transformation and with emphasis on the spin wave interactions. The temperature Tₒ below which the concept of magnons is valid is determined. By a special expansion formalism of operator (l-a+a/2...
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| Format: | Thesis |
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1988-11
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