The effect of high pressure on the Néel temperature of-manganese

1971 ◽  
Vol 47 (2) ◽  
pp. K99-K101 ◽  
Author(s):  
A. Sawaoka ◽  
T. Soma ◽  
S. Saito ◽  
Y. Endoh
Keyword(s):  
High Pressure ◽  
Neel Temperature ◽  
Néel Temperature

scholarly journals The Effect of the In-Situ Heat Treatment on the Martensitic Transformation and Specific Properties of the Fe-Mn-Si-Cr Shape Memory Alloys Processed by HSHPT Severe Plastic Deformation

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4621
Author(s):  
Carmela Gurau ◽  
Gheorghe Gurau ◽  
Felicia Tolea ◽  
Bogdan Popescu ◽  
Mihaela Banu ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
High Pressure ◽  
Severe Plastic Deformation ◽  
High Speed ◽  
High Pressure Torsion ◽  
Electron Interaction ◽  
Sudden Increase ◽  
Neel Temperature ◽  
Néel Temperature

This work focuses on the temperature evolution of the martensitic phase ε (hexagonal close packed) induced by the severe plastic deformation via High Speed High Pressure Torsion method in Fe57Mn27Si11Cr5 (at %) alloy. The iron rich alloy crystalline structure, magnetic and transport properties were investigated on samples subjected to room temperature High Speed High Pressure Torsion incorporating 1.86 degree of deformation and also hot-compression. Thermo-resistivity as well as thermomagnetic measurements indicate an antiferromagnetic behavior with the Néel temperature (TN) around 244 K, directly related to the austenitic γ-phase. The sudden increase of the resistivity on cooling below the Néel temperature can be explained by an increased phonon-electron interaction. In-situ magnetic and electric transport measurements up to 900 K are equivalent to thermal treatments and lead to the appearance of the bcc-ferrite-like type phase, to the detriment of the ε(hcp) martensite and the γ (fcc) austenite phases.

Electrical resistivity of URu2Si2 below the Néel temperature at high pressure

1994 ◽  
Vol 199-200 ◽  
pp. 148-150 ◽  
Author(s):  
Gendo Oomi ◽  
Tomoko Kagayama ◽  
Yoshichika Ōnuki ◽  
Takemi Komatsubara
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
Neel Temperature ◽  
Néel Temperature

Conduction Characteristics of Charge Ordering Type Ferroelectrics,YFe2O4

2006 ◽  
Vol 966 ◽  
Author(s):  
Ken Imamura ◽  
Yoichi Horibe ◽  
Takeshi Yoshimura ◽  
Norifumi Fujimura ◽  
Shigeo Mori ◽  
...  
Keyword(s):  
Room Temperature ◽  
Inflection Point ◽  
Oxygen Deficiency ◽  
Complex Impedance ◽  
Charge Ordering ◽  
Neel Temperature ◽  
Ohmic Conduction ◽  
Néel Temperature ◽  
Impedance Measurements ◽  
Conduction Properties

ABSTRACTElectrical conduction properties of charge ordering type ferroelectrics YFe2O4 were investigated. YFe2O4 was synthesized in reduced atmosphere at 1200 °C. Oxygen partial pressure of the reduced atmosphere was controlled by the equilibrium state of CO and CO2. YFe2O4 is paramagnetic at room temperature and has Néel temperature around 250K. The Néel temperature was decreased with increasing the amount of oxygen deficiency. Moreover, YFe2O4 showed ohmic conduction from 260 to 100 K. The temperature dependence of the DC conductivity showed an inflection point at the Néel temperature, which indicated the development of charge ordering of Fe2+ and Fe3+ ions. From the complex impedance measurements, the equivalent circuits of YFe2O4 with different oxygen deficiency were determined at various temperatures.

Néel temperature of zinc-blende, MBE-grown MnTe layers: modification by the crystal growth conditions

2004 ◽  
Vol 1 (4) ◽  
pp. 953-956 ◽  
Author(s):  
W. Szuszkiewicz ◽  
E. Dynowska ◽  
J. Z. Domagala ◽  
E. Janik ◽  
E. Łusakowska ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Growth Conditions ◽  
Neel Temperature ◽  
Néel Temperature ◽  
Zinc Blende

Thickness Dependence of the Néel Temperature and TCR of MnSe Films

1994 ◽  
Vol 145 (1) ◽  
pp. 105-111 ◽  
Author(s):  
V. Thanigaimani ◽  
M. A. Angadi
Keyword(s):  
Thickness Dependence ◽  
Neel Temperature ◽  
Néel Temperature
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