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Pressure-dependent ...
Pressure-dependent spin fluctuations and magnetic structure in the topologically frustrated spin glass alloy Y(Mn0.95Al0.05)(2)
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Telling, M. T. F. (författare)
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Knight, K. S. (författare)
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Pratt, F. L. (författare)
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Church, A. J. (författare)
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- Deen, Pascale (författare)
- Lund University,Lunds universitet,European Spallation Source ESS AB,Stiftelser och övriga anknutna verksamheter,Other Institutions and Utilities
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Ellis, K. J. (författare)
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Watanabe, I. (författare)
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Cywinski, R. (författare)
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(creator_code:org_t)
- 2012
- 2012
- Engelska.
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Ingår i: Physical Review B (Condensed Matter and Materials Physics). - 1098-0121. ; 85:18
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Longitudinal field (LF = 110 G) muon spin relaxation (mu SR) has been used to investigate the pressure dependence (P < 4.5 kbar) of paramagnetic spin fluctuations in the spin glass alloy Y(Mn0.95Al0.05)(2) via observation of the mu(+) spin depolarization. External mechanical force is seen to counteract the Al-induced chemical pressure, fully delocalizing the Mn moment and altering the nature of the spin fluctuation spectrum sensed by the muon. A qualitative change in the functional form of the mu(+) spin depolarization is observed. Complementary ambient and high-pressure neutron diffraction measurements suggest not only pressure-dependent structural transitions but also the instability of the localized manganese moment. The ambient and high-pressure mu(+) spin depolarization results from Y(Mn0.95Al0.05)(2) are likened to P = 0 results reported for other Y(Mn1-xAlx)(2) alloys. Finally, the possibility of using mu(+) spin depolarization rates to predict experimental inelastic neutron scattering (INS) line widths is considered; the muon having the potential to provide information equivalent to that obtained via INS but with greatly reduced data collection times.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- art (ämneskategori)
- ref (ämneskategori)
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