Mössbauer Spectroscopy of New Materials Containing Gadolinium

Magnetic properties of the 1/1 approximant Ag42In42Gd16 to the icosahedral quasicrystal Ag–In–Gd

“…The following parameters were derived from the fit ( 2 = 1.14) of the Mössbauer spectrum in Fig. 8 [34]. The value of eff g is close to that for the i QC Ag 50 In 36 Gd 14 [7], which is indicative of a strong similarity of the local atomic structure around the Gd atoms in the 1/1 approximant Ag 42 In 42 Gd 16 and the i QC Ag 50 In 36 Gd 14 .…”

“…Consequently, the quadrupole splitting of the excited nuclear state, which is sensitive to the sign of V zz and the magnitude of Á, is smaller than the natural linewidth nat = 0.250 mm/s mm/s. As a result, only the absolute value of the effective quadrupole splitting parameter eff g = eQ g |V zz | 1 + Á 2 /3 can be derived from a Mössbauer spectrum of a sample in the paramagnetic state [34]. The following parameters were derived from the fit ( 2 = 1.14) of the Mössbauer spectrum in Fig.…”

Structure, Chemical Bonding, Magnetic Susceptibility, and155Gd Mössbauer Spectroscopy of the Antiferromagnets GdAgGe, GdAuGe, GdAu0.44(1)In1.56(1), and GdAuIn

“…)/(1! )]\ for the rare earth is 200 (53). Another source of quantitative uncertainty is connected with the value of the ground state Gd quadrupole moment Q; it is needed in order to calculate the electric field gradient » XX component from the measured quadrupole coupling energy E / defined above.…”

155Gd Mössbauer Spectroscopic Study of GdM(CN)6 · 4H2O (M = CrIII, FeIII and CoIII) and KGdM(CN)6 · 3H2O (M = FeII and RuII)

“…In the case of 155 Gd Mössbauer quadrupole interactions, the lattice EFG would be dominant in most situations since the Gd 3+ (4f 7 ) ion has the higher symmetric valence electron distribution. Thus the e 2 qQ value is sensitive to the change of the symmetry and the local structure around the Gd 3+ ion [1].…”

“…Many gadolinium compounds, including solid solutions, intermetallic compounds, alloys and oxides have been studied by 155 Gd Mössbauer spectroscopy [1]. Among the 155 Gd Mössbauer parameters, especially the quadrupole coupling constant (e 2 qQ) gives a valuable information.…”