Magnetic hyperfine field splitting in the Zintl phase Eu2Mg4Si3

2019 ◽  
Vol 74 (5) ◽  
pp. 451-454 ◽  
Author(s):  
Theresa Block ◽  
Ryosuke Numakura ◽  
Masashi Kosaka ◽  
Shinji Michimura ◽  
Rainer Pöttgen
Keyword(s):  
Mössbauer Spectroscopy ◽  
Hyperfine Field ◽  
Mossbauer Spectroscopy ◽  
Magnetic Hyperfine Field ◽  
Type Structure ◽  
Magnetic Hyperfine ◽  
Hyperfine Fields ◽  
Zintl Phase ◽  
Field Splitting ◽  
Divalent State

AbstractEu2Mg4Si3 ≡ (2Eu2+)(4Mg2+)(3Si4−) is an electron-precise Zintl phase. Its Hf2Co4P3-type structure contains three crystallographically independent europium sites. The divalent state of europium was manifested through 151Eu Mössbauer spectroscopy. In the paramagnetic regime (T = 78 K) the isomer shifts range from −9.16 to −11.29 mm s−1. Eu2Mg4Si3 shows complex magnetic hyperfine field splitting at T = 5.7 K with a superposition of three subspectra with magnetic hyperfine fields of 5.4 (Eu2), 20.4 (Eu1) and 22.4 (Eu3) T.

scholarly journals Spin relaxation in antiferromagnetic Fe–Fe dimers slowed down by anisotropic DyIII ions

2013 ◽  
Vol 4 ◽  
pp. 807-814 ◽  
Author(s):  
Valeriu Mereacre ◽  
Frederik Klöwer ◽  
Yanhua Lan ◽  
Rodolphe Clérac ◽  
Juliusz A Wolny ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Magnetic Anisotropy ◽  
Hyperfine Field ◽  
Crystal Field ◽  
Spin Relaxation ◽  
Mossbauer Spectroscopy ◽  
Molecular Clusters ◽  
Hyperfine Fields ◽  
Mößbauer Spectroscopy

By using Mössbauer spectroscopy in combination with susceptibility measurements it was possible to identify the supertransferred hyperfine field through the oxygen bridges between DyIII and FeIII in a {Fe4Dy2} coordination cluster. The presence of the dysprosium ions provides enough magnetic anisotropy to “block” the hyperfine field that is experienced by the iron nuclei. This has resulted in magnetic spectra with internal hyperfine fields of the iron nuclei of about 23 T. The set of data permitted us to conclude that the direction of the anisotropy in lanthanide nanosize molecular clusters is associated with the single ion and crystal field contributions and 57Fe Mössbauer spectroscopy may be informative with regard to the the anisotropy not only of the studied isotope, but also of elements interacting with this isotope.

Sn hyperfine field systematics in Rh2MnZ Heusler alloys

1984 ◽  
Vol 62 (4) ◽  
pp. 396-399 ◽  
Author(s):  
R. A. Dunlap ◽  
S. Jha ◽  
G. M. Julian
Keyword(s):  
Mössbauer Spectroscopy ◽  
Hyperfine Field ◽  
Electron Density ◽  
Conduction Electron ◽  
Mossbauer Spectroscopy ◽  
Heusler Alloys ◽  
Hyperfine Fields ◽  
Mößbauer Spectroscopy ◽  
Theoretical Predictions ◽  
Conduction Electron Density

Sn hyperfine fields were measured using Mössbauer spectroscopy in the Heusler alloys Rh2MnZ (Z = Ge, Sn). The measurements yielded values of −48 and +31 kOe at 77 K for Sn in Rh2MnGe and Rh2MnSn, respectively. These values showed that in these alloys the Sn hyperfine field decreases with increasing conduction electron density. These results are compared with those obtained for Sn hyperfine fields in X2MnZ and Co2YZ Heusler alloys and are discussed in terms of theoretical predictions.

Magnetic hyperfine field splitting in EuAg4As2 and EuAg4Sb2

2013 ◽  
Vol 20 ◽  
pp. 65-69 ◽  
Author(s):  
Birgit Gerke ◽  
Christian Schwickert ◽  
Stanislav S. Stoyko ◽  
Mansura Khatun ◽  
Arthur Mar ◽  
...  
Keyword(s):  
Hyperfine Field ◽  
Magnetic Hyperfine Field ◽  
Magnetic Hyperfine ◽  
Field Splitting

Measurement of Extreme Hyperfine Fields in Two-Coordinate High-Spin Fe2+Complexes by Mössbauer Spectroscopy: Essentially Free-Ion Magnetism in the Solid State

2014 ◽  
Vol 53 (22) ◽  
pp. 12100-12107 ◽  
Author(s):  
Aimee M. Bryan ◽  
Chun-Yi Lin ◽  
Michio Sorai ◽  
Yuji Miyazaki ◽  
Helen M. Hoyt ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Solid State ◽  
High Spin ◽  
Mossbauer Spectroscopy ◽  
Hyperfine Fields ◽  
Mößbauer Spectroscopy ◽  
Free Ion
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