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The equation of state of icosahedral Al₈₆{Mn}₁₄$ (i-Al-Mn) at room temperature has been determined up to {~}28 GPa using diamond-anvil x-ray powder-diffraction techniques. The i-Al-Mn remained icosahedral over this pressure range; no phase transition was observed. The measured compression of the two strongest observed i-Al-Mn diffraction peaks (100000) and (110001), was isotropic within the measurement error: d(110001)/d(100000)=1.776±{}0.006. The pressure-volume data were least-squares fit to a finite-strain equation of state to determine the zero-pressure bulk modulus, K₀=117.6±{}16.8 GPa, and its pressure derivative, K₀'=6.0±{}2.4. .AE
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Sato‐Sorensen et al. (1989) studied this question.
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