Direct measurement of local magnetic moments at grain boundaries in iron

2013 ◽  
Vol 68 (5) ◽  
pp. 253-256 ◽  
Author(s):  
Seiichiro Ii ◽  
Kyosuke Hirayama ◽  
Kyohei Matsunaga ◽  
Hiromichi Fujii ◽  
Sadahiro Tsurekawa
Keyword(s):  
Grain Boundaries ◽  
Direct Measurement ◽  
Magnetic Moments

Direct measurement of non-equilibrium solute segregation to grain boundaries

1969 ◽  
Vol 3 (9) ◽  
pp. 663-665 ◽  
Author(s):  
S.J. Bercovici ◽  
P. Niessen ◽  
J.J. Byerley
Keyword(s):  
Grain Boundaries ◽  
Direct Measurement ◽  
Solute Segregation ◽  
Non Equilibrium

Properties of Iron Atoms at Grain Boundaries in Fe and Fe72Al28

1998 ◽  
Vol 527 ◽  
Author(s):  
O. Schneeweiss ◽  
I. Turek ◽  
J. Čermák ◽  
P. Lejček
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Single Crystals ◽  
First Principles ◽  
Magnetic Moments ◽  
Emission Mössbauer Spectroscopy ◽  
First Principles Calculations ◽  
Hyperfine Parameters ◽  
Impurity Atoms ◽  
Atomic Spacing

ABSTRACTLocation of diffused 57Co atoms in single crystals, bicrystals and polycrystals of pure iron and Fe72Al28alloy were investigated by means of emission Mössbauer spectroscopy. To interpret the results, first principles calculations of iron atom magnetic moments and hyper-fine field were carried out. From comparison of M6ssbauer spectra of single crystals with those of bicrystals and polycrystals, an information about grain boundary positions occupied by diffusing atoms is obtained. It is shown that about 5% of the diffusing atoms at the {112} grain boundary of iron are located at the positions either having impurity atoms in the nearest neighbourhood or characterized by larger atomic spacing in comparison with the bulk. In the Fe72Al28 a dominating portion of diffusing atoms have different surrounding than in grain volume. An enrichment of grain boundaries by aluminum could explain their hyperfine parameters.

scholarly journals Direct measurement of nuclear magnetic moments of radium isotopes

1987 ◽  
Vol 59 (7) ◽  
pp. 771-774 ◽  
Author(s):  
E. Arnold ◽  
W. Borchers ◽  
M. Carre ◽  
H. T. Duong ◽  
P. Juncar ◽  
...  
Keyword(s):  
Direct Measurement ◽  
Magnetic Moments ◽  
Radium Isotopes ◽  
Nuclear Magnetic Moments ◽  
Nuclear Magnetic

Direct Measurement of Electron Emission from Defect States at Silicon Grain Boundaries

1980 ◽  
Vol 44 (20) ◽  
pp. 1365-1365
Author(s):  
C. H. Seager ◽  
G. E. Pike ◽  
D. S. Ginley
Keyword(s):  
Grain Boundaries ◽  
Direct Measurement ◽  
Electron Emission ◽  
Defect States
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