Which mechanism limits temperature decrease during adiabatic demagnetization of a paramagnetic salt near absolute zero?

💡 Explanation

During adiabatic demagnetization, magnetic moments align, releasing energy to the lattice, lowering temperature, while vibrations cause energy leak. Phonon bottleneck halts entropy removal by slowing energy transfer from spins due to interactions. Therefore, lattice vibrations result, rather than other effects which have low contributions at extremely low temperatures or require different physical phenomena.

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