Premartensitic phase transformation in a TiNiFe shape memory alloy studied by Mössbauer spectroscopy

1991 ◽  
Vol 66 (1-4) ◽  
pp. 345-349 ◽  
Author(s):  
M. Jiménez ◽  
S. Aburto ◽  
S. Gómez ◽  
V. Marquina ◽  
M. L. Marquina ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Mössbauer Spectroscopy ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy

Investigation of phase transformation in an Al-0.58 wt% Fe alloy by Mössbauer spectroscopy

1988 ◽  
Vol 41 (1) ◽  
pp. 595-598 ◽  
Author(s):  
L. Murgas ◽  
Z. Homonnay ◽  
S. Nagy ◽  
A. Vértes
Keyword(s):  
Phase Transformation ◽  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy

MÖssbauer Study of a Tinife Shape Memory Alloy.

1991 ◽  
Vol 246 ◽  
Author(s):  
M. Jimenez ◽  
V. Marquina ◽  
S. Aburto ◽  
M.L. Marquina ◽  
R. Gomez ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Shape Memory ◽  
Room Temperature ◽  
Mossbauer Spectroscopy ◽  
Density Wave ◽  
Quadrupole Doublet ◽  
Mössbauer Study ◽  
Scanning Calorimetry ◽  
Mößbauer Spectroscopy ◽  
Wave Induced

AbstractMÖssbauer spectroscopy is very sensitive to structural transitions that may occur during a phase change of the type known to arise in the shape memory TiNiFe alloy. In this work we present the results of resistance vs temperature, differential scanning calorimetry (DSC) and Mössbauer spectroscopy (MS) measurements in Ti50Ni47Fe3 sample. The resistance vs temperature curve shows the usual sharp increase associated to the B2 → R transition at Tp = 245 K and then raises until a maximum is attained at ∼ 150 K. The DSC curve shows a peak maximum at the same temperature where the resistivity starts to increase. The room temperature Mössbauer spectrum consists of a single line, indicating that the iron atoms have cubic surroundings. As temperature is lowered, a small asymmetric quadrupole doublet begins to develop. The isomer shift (I.S.) and quadrupole splitting (ΔQ) values of this doublet increase with decreasing temperature until almost constant values are achieved at temperatures ∼ 100 K. We relate the changes in the Mössbauer spectra with previously proposed charge density wave induced premartensitic transition.

scholarly journals Mössbauer Spectroscopy Studies on Magnetic Properties for 57Fe-substituted Ni-Mn-Sn Metamagnetic Shape Memory Alloys

Metals ◽  
2013 ◽  
Vol 3 (2) ◽  
pp. 225-236 ◽  
Author(s):  
Rie Umetsu ◽  
Kenji Sano ◽  
Kouji Fukushima ◽  
Takeshi Kanomata ◽  
Yusuke Taniguchi ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Mössbauer Spectroscopy ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy ◽  
Spectroscopy Studies

119Sn Mössbauer spectroscopy in the study of metamagnetic shape memory alloys

2018 ◽  
Vol 239 (1) ◽  
Author(s):  
I. Unzueta ◽  
J. López-García ◽  
V. Sánchez-Alarcos ◽  
V. Recarte ◽  
J. I. Pérez-Landazábal ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Mossbauer Spectroscopy ◽  
119Sn Mössbauer Spectroscopy ◽  
Mößbauer Spectroscopy

scholarly journals High-Temperature Superconductors and Related Compounds Studied by Mössbauer Spectroscopy

1993 ◽  
Vol 15 (3-4) ◽  
pp. 211-224 ◽  
Author(s):  
E. Kuzmann ◽  
Z. Homonnay ◽  
S. Nagy ◽  
M. Gál ◽  
A. Vértes
Keyword(s):  
Phase Transformation ◽  
Mössbauer Spectroscopy ◽  
High Temperature ◽  
Low Temperature ◽  
Mossbauer Spectroscopy ◽  
High Temperature Superconductors ◽  
Temperature Phase ◽  
Mößbauer Spectroscopy ◽  
Related Compounds ◽  
Low Temperature Phase

57Fe,119Sn, and151Eu Mössbauer spectroscopy was used to study the chemical structure, phonon mode changes, and low-temperature phase transformation around the Tcas well as suppression of superconductivity in high-temperature superconductors and related compounds. Anomalous temperature-dependent changes in the total57Fe spectral area fraction and in the Mössbauer line shift were simultaneously found around the Tcin a EuBa2(Cu0.9957Fe0.01)3O7-dsuperconductor. These anomalous changes were attributed to phonon softening and low-temperature phase transformation occurring around the superconducting transition. Significant differences were observed between the57Fe Mössbauer spectra of superconducting EuBa2(Cu0.9957Fe0.01)3O7-dand the isostructural non-superconducting PrBa2(Cu0.9957Fe0.01)3O7-d. The differences were interpreted in connection with the suppression of superconductivity (by hole filling or hybridization of Pr, Cu and O states) in the Pr-containing compound. The unusually high isomer shift value observed in the Pr-containing material can give evidence for the charge transfer mechanism between the Cu(1) chains and the Cu(2) planes and for its role in the suppression of superconductivity.

Amorphous to Crystalline Phase Transformation in Metglas® Studied by Mössbauer Spectroscopy

1997 ◽  
Vol 481 ◽  
Author(s):  
V. Marquina ◽  
R. Gómez ◽  
S. Aburto ◽  
M. Jiménez ◽  
R. Ridaura ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Differential Scanning Calorimetry ◽  
Phase Transformation ◽  
Mössbauer Spectroscopy ◽  
Curie Temperature ◽  
Mossbauer Spectroscopy ◽  
Scanning Calorimetry ◽  
Mößbauer Spectroscopy ◽  
The Magnetic Field

ABSTRACTWe present differential scanning calorimetry (DSC) and in situ Mössbauer spectroscopy results for Metglas ribbons, to which different heat treatments were made. The Curie temperature of the amorphous phase is determined and the evolution of the magnetic field of this phase is studied as a function of temperature.

Mössbauer Spectroscopy, Dilatometry and Neutron Diffraction Detection of the ɛ-Phase Fraction in Fe–Mn Shape Memory Alloys

2005 ◽  
Vol 161 (1-4) ◽  
pp. 221-227 ◽  
Author(s):  
J. Martínez ◽  
G. Aurelio ◽  
G. Cuello ◽  
S. M. Cotes ◽  
A. Fernández Guillermet ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Neutron Diffraction ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Mossbauer Spectroscopy ◽  
Phase Fraction ◽  
Mößbauer Spectroscopy
Sign in / Sign up

Export Citation Format

Share Document