scholarly journals Amorphization Effect for Kondo Semiconductor CeRu2Al10

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Yusuke Amakai ◽  
Yasuhiro Shiojiri ◽  
Kei Ishihara ◽  
Hiroto Hitotsukabuto ◽  
Shigeyuki Murayama ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electrical Resistivity ◽  
Temperature Region ◽  
Kondo Effect ◽  
Magnetic Transition ◽  
High Temperature Region ◽  
Small Temperature ◽  
Paramagnetic Behavior ◽  
Kondo Semiconductor ◽  
Disordered Alloy

We measured the magnetic susceptibility χ, electrical resistivity ρ, and specific heat Cp of a sputtered amorphous (a-)CeRu2Al10 alloy. χ value for a-CeRu2Al10 alloy follows a Curie-Weiss paramagnetic behavior in the high-temperature region, and magnetic transition was not observed down to 2 K. The effective paramagnetic moment peff is 1.19 μB/Ce-atom. The resistivity shows a typical disordered alloy behavior, that is, small temperature dependence for the whole temperature range. We observed an enhancement of ρ and Cp/T in the low-temperature region of T<10 K. The enhancement in ρ is suppressed by applying a magnetic field. It is suggested that this behavior is caused by the Kondo effect.

Observation of hysteretic magnetic phase transitions coupled with orientation motion of ions and dielectric relaxation in a one-dimensional nickel-bis-dithiolene molecule solid

2014 ◽  
Vol 43 (16) ◽  
pp. 6251-6261 ◽  
Author(s):  
Xuan-Rong Chen ◽  
Wei-Hua Ning ◽  
Hao Yang ◽  
Jian-Lan Liu ◽  
Fang Xuan ◽  
...  
Keyword(s):  
Phase Transitions ◽  
High Temperature ◽  
Dielectric Relaxation ◽  
Temperature Region ◽  
Magnetic Phase ◽  
Magnetic Transition ◽  
Magnetic Phase Transitions ◽  
Structural Transitions ◽  
High Temperature Region ◽  
One Dimensional

Step-wise orientation motions of ions results in two successive structural transitions, each one is associated with a hysteretic magnetic transition and dielectric relaxation occurs in the high temperature region.

The Electrical Conductance of Some Alkali- and Divalent Transition Metal TCNQ Salts

1978 ◽  
Vol 33 (3) ◽  
pp. 344-346 ◽  
Author(s):  
H. H. Afify ◽  
F. M. Abdel-Kerim ◽  
H. F. Aly ◽  
A. A. Shabaka
Keyword(s):  
Phase Transition ◽  
Activation Energy ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Transition Metal ◽  
Temperature Region ◽  
Electrical Conductance ◽  
Metal Cations ◽  
High Temperature Region ◽  
Transition Metal Cations

AbstractThe electrical resistivity of the tetracyanoquinodimethane salts of ten alkali and transition metal cations has been investigated at temperatures from 300 to 470 K. The measurements indicate a phase transition, the activation energy of conductance being smaller in the high temperature region. The nature of this phase transition is discussed.

Magnetic and Related Properties of Tb4Sb3 Compound

2011 ◽  
Vol 170 ◽  
pp. 60-69 ◽  
Author(s):  
T.I. Ivanova ◽  
S.A. Nikitin ◽  
A.V. Morozkin ◽  
G.A. Tskhadadze ◽  
J. Mulak ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Crystal Structure ◽  
Electrical Resistivity ◽  
Specific Heat ◽  
Magnetic Transition ◽  
Polycrystalline Sample ◽  
Splitting Scheme ◽  
Metallographic Examination ◽  
X Ray ◽  
The Magnetic Field

An X-ray phase analysis and the metallographic examination were employed in the investigation of crystal structure of the Tb4Sb3 compound. Magnetic properties have been studied by means of magnetometric measurements, including a magnetocaloric effect, electrical resistivity and magnetoresistivity, and specific heat in broad temperature and the magnetic field ranges on a polycrystalline sample. It was confirmed that the Tb4Sb3 compound is an antiferromagnet with the temperature of the magnetic transition, TN = 111.4 K (specific heat) or 114 K (magnetization) . The results are discussed in the term of a crystal field splitting scheme.

Dielectric Breakdown of Polyimide Film in High Temperature Region

1976 ◽  
Vol 15 (9) ◽  
pp. 1813-1814 ◽  
Author(s):  
Masayuki Nagao ◽  
Goro Sawa ◽  
Masahiko Fukui ◽  
Masayuki Ieda
Keyword(s):  
High Temperature ◽  
Temperature Region ◽  
Dielectric Breakdown ◽  
Polyimide Film ◽  
High Temperature Region

Effect of electron inertia on radiative instability of rotating two-component gaseous plasma

2012 ◽  
Vol 90 (12) ◽  
pp. 1209-1221 ◽  
Author(s):  
A.K. Patidar ◽  
R.K. Pensia ◽  
V. Shrivastava
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Growth Rate ◽  
Electrical Resistivity ◽  
Heat Loss ◽  
Loss Function ◽  
Mode Analysis ◽  
Electron Inertia ◽  
Radiative Instability ◽  
Jeans Criterion

The problem of radiative instability of homogeneous rotating partially ionized plasma incorporating viscosity, porosity, and electron inertia in the presence of a magnetic field is investigated. A general dispersion relation is obtained using normal mode analysis with the help of relevant linearized perturbation equations of the problem. The modified Jeans criterion of instability is obtained. The conditions of Jeans instabilities are discussed in the different cases of interest. It is found that the simultaneous effect of viscosity, rotation, finite conductivity, and porosity of the medium does not essentially change the Jeans criterion of instability. It is also found that the presence of arbitrary radiative heat-loss function and thermal conductivity modified the conditions of Jeans instability for longitudinal propagation. It is found that, for longitudinal propagation, the conditions of radiative instability are independent of magnetic field, viscosity, rotation, finite electrical resistivity, and electron inertia, but for the transverse mode of propagation it depends upon finite electrical resistivity and strength of magnetic field and is independent of viscosity, electron inertia, and rotation. From the curves we find that viscosity has a stabilizing effect on the growth rate of instability but the thermal conductivity and density-dependent heat-loss function has a destabilizing effect on the instability growth rate.

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