Time Dependence of Muon Spin Relaxation Rate in Aluminum and Al-1.6%Mg2Si Alloy

2020 ◽  
Vol 985 ◽  
pp. 10-15
Author(s):  
Katsuhiko Nishimura ◽  
Kenji Matsuda ◽  
Seung Won Lee ◽  
Isao Watanabe ◽  
Majed Abdel Jawad ◽  
...  
Keyword(s):  
Activation Energy ◽  
Spin Relaxation ◽  
Muon Spin ◽  
Pure Aluminum ◽  
Muon Spin Relaxation ◽  
Zero Field ◽  
Stage Transition ◽  
Transition Times ◽  
D Values ◽  
Two Stages

Zero-field muon spin relaxation experiments were carried out for Al-1.6%Mg2Si and a pure aluminum in isothermal conditions between 260 and 300 K. Observed relaxation spectra were analyzed to extract the dipole width (D) values which were found to decrease with time after solution heat treatment and quenching. Time variations of D appeared to take place two stages in both samples. The stage transition times (tII) deduced for Al-1.6%Mg2Si were comparable to those for the Si-rich clustering stage reported for Al-Mg-Si alloys. The estimated activation energy of Si-rich clustering was 0.62 (±0.04) eV. The stage transition times (tM) for the pure aluminum were 255, 110 and 82 min after quenching at the measuring temperatures of 260, 280 and 300 K, respectively. An Arrhenius plot of logarithmic tM against reciprocal temperature resulted in an activation energy of 0.19 (±0.06) eV.

scholarly journals Solute-Vacancy Clustering In Al-Mg-Si Alloys Studied By Muon Spin Relaxation Technique

2015 ◽  
Vol 60 (2) ◽  
pp. 925-929 ◽  
Author(s):  
K. Nishimura ◽  
K. Matsuda ◽  
R. Komaki ◽  
N. Nunomra ◽  
S. Wenner ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Spin Relaxation ◽  
Muon Spin ◽  
Muon Spin Relaxation ◽  
Zero Field ◽  
Temperature Variations ◽  
Vacancy Clusters ◽  
Relaxation Functions ◽  
Similar Temperature ◽  
Relaxation Experiments

Abstract Zero-field muon spin relaxation experiments were carried out with Al-1.6%Mg2Si, Al-0.5%Mg, and Al-0.5%Si alloys. Observed relaxation spectra were compared with the calculated relaxation functions based on the Monte Carlo simulation to extract the dipolar width (Δ), trapping (νt), and detrapping rates (νd), with the initially trapped muon fraction (P0). The fitting analysis has elucidated that the muon trapping rates depended on the heat treatment and solute concentrations. The dissolved Mg in Al dominated the νt at lower temperatures below 120 K, therefore the similar temperature variations of νt were observed with the samples mixed with Mg. The νt around 200 K remarkably reflected the heat treatment effect on the samples, and the largest νt value was found with the sample annealed at 100°C among Al-1.6%Mg2Si alloys. The as-quenched Al-0.5%Si sample showed significant νt values between 80 and 280 K relating with Si-vacancy clusters, but such clusters disappeared with the natural aged Al-0.5%Si sample.

Spontaneous magnetic ordering in CeRh3B2 observed by zero-field muon-spin relaxation

1996 ◽  
Vol 74 (3) ◽  
pp. 259-267 ◽  
Author(s):  
D. W. Cooke ◽  
B. L. Bennett ◽  
A. C. Lawson ◽  
J. G. Huber ◽  
J. Oostens ◽  
...  
Keyword(s):  
Spin Relaxation ◽  
Muon Spin ◽  
Magnetic Ordering ◽  
Muon Spin Relaxation ◽  
Zero Field

scholarly journals Absence of zero field muon spin relaxation induced by superconductivity in the B phase of UPt3

1995 ◽  
Vol 205 (2-3) ◽  
pp. 239-243 ◽  
Author(s):  
P.Dalmas de Réotier ◽  
A. Huxley ◽  
A. Yaouanc ◽  
J. Flouquet ◽  
P. Bonville ◽  
...  
Keyword(s):  
Spin Relaxation ◽  
Muon Spin ◽  
Muon Spin Relaxation ◽  
Zero Field

Zero field muon spin relaxation rate in the superconducting state of Nb3Al

1986 ◽  
Vol 32 (1-4) ◽  
pp. 569-570 ◽  
Author(s):  
S. G. Barsov ◽  
A. L. Getalov ◽  
V. G. Grebinnik ◽  
I. I. Gurevich ◽  
B. F. Kirillov ◽  
...  
Keyword(s):  
Relaxation Rate ◽  
Spin Relaxation ◽  
Superconducting State ◽  
Muon Spin ◽  
Muon Spin Relaxation ◽  
Zero Field ◽  
Spin Relaxation Rate

scholarly journals Anomaly inYBa2Cu4O8charge distribution belowTc: A zero-field muon spin relaxation study

2005 ◽  
Vol 71 (5) ◽  
Author(s):  
P. Carretta ◽  
A. Keren ◽  
J. S. Lord ◽  
I. Zucca ◽  
S. M. Kazakov ◽  
...  
Keyword(s):  
Spin Relaxation ◽  
Muon Spin ◽  
Muon Spin Relaxation ◽  
Zero Field ◽  
Relaxation Study

scholarly journals The Effect of Randomness on the Quantum Spin System Tl1-xKxCuCl3 with x=0.44 Studied by the Zero-Field Muon-Spin-Relaxation (ZF-µSR) Method

2007 ◽  
Vol 76 (7) ◽  
pp. 074704 ◽  
Author(s):  
Takao Suzuki ◽  
Fumiko Yamada ◽  
Isao Watanabe ◽  
Takayuki Goto ◽  
Akira Oosawa ◽  
...  
Keyword(s):  
Spin Relaxation ◽  
Spin System ◽  
Muon Spin ◽  
Muon Spin Relaxation ◽  
Quantum Spin ◽  
Quantum Spin System ◽  
Zero Field

Zero-field magnetic structure inCeB6reinvestigated by neutron diffraction and muon spin relaxation

2003 ◽  
Vol 68 (21) ◽  
Author(s):  
O. Zaharko ◽  
P. Fischer ◽  
A. Schenck ◽  
S. Kunii ◽  
P.-J. Brown ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Magnetic Structure ◽  
Spin Relaxation ◽  
Muon Spin ◽  
Muon Spin Relaxation ◽  
Zero Field
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