scholarly journals Magnetoresistive study of the antiferromagnetic–weak ferromagnetic transition in single-crystal La2CuO4+δ

2004 ◽  
Vol 30 (5) ◽  
pp. 411-416 ◽  
Author(s):  
B. I. Belevtsev ◽  
N. V. Dalakova ◽  
V. N. Savitsky ◽  
A. S. Panfilov ◽  
I. S. Braude ◽  
...  
Keyword(s):  
Single Crystal ◽  
Ferromagnetic Transition ◽  
Weak Ferromagnetic

CRYSTALLINE STRUCTURE AND PHYSICAL PROPERTIES OF UCo2Al3

2004 ◽  
Vol 18 (30) ◽  
pp. 3905-3914
Author(s):  
E. VERDÍN ◽  
R. ESCUDERO
Keyword(s):  
Intermetallic Compound ◽  
Physical Properties ◽  
Single Crystal ◽  
Intermetallic Compounds ◽  
Heavy Fermion ◽  
Ferromagnetic Transition ◽  
Crystallographic Characteristics ◽  
Heavy Fermion Behavior ◽  
Small Single Crystal ◽  
Weak Ferromagnetic

Some intermetallic compounds which contain uranium or cerium present heavy fermion characteristics. Take, for example, in the UM 2 Al 3 ( M = Pd , Ni ) family, superconductivity and magnetism coexist and present heavy fermion behavior. This work presents the crystallographic characteristics and physical properties of a new compound of this family; the intermetallic compound UCo 2 Al 3. Our initial crystallographic studies performed in a small single crystal show that the structure is hexagonal and similar to the UNi 2 Al 3 and UPd 2 Al 3 parent compounds. The space group is P6/mmm with a=5.125 Å and c=4.167 Å crystalline parameters. Measurements of resistivity and magnetization performed on the single crystal reveal that the compound is not superconducting when measured at about 1.8 K. The compound is highly anisotropic and features related to Kondo-like behavior are observed. A weak ferromagnetic transition is observed at a temperature of about 20 K.

Magnetic order and weak ferromagnetic transition in Gd2CuO4

2000 ◽  
Vol 87 (9) ◽  
pp. 5911-5913 ◽  
Author(s):  
J. Mira ◽  
J. Rivas ◽  
A. Butera ◽  
L. B. Steren ◽  
J. M. Garcı́a-Beneytez ◽  
...  
Keyword(s):  
Magnetic Order ◽  
Ferromagnetic Transition ◽  
Weak Ferromagnetic

Magnetization Mössbauer Effect and Superconductivity in Fe2Te3

1974 ◽  
Vol 52 (18) ◽  
pp. 1800-1804 ◽  
Author(s):  
Erika Hermon ◽  
W. B. Muir ◽  
J. Quaroni ◽  
R. C. Sweet
Keyword(s):  
Liquid Helium ◽  
Temperature Variation ◽  
Density Of States ◽  
Mössbauer Effect ◽  
Meissner Effect ◽  
Internal Field ◽  
Ferromagnetic Transition ◽  
Superconducting Transition ◽  
Mossbauer Effect ◽  
Weak Ferromagnetic

The magnetization and Mössbauer effect in Fe2Te3 have been measured between liquid helium temperatures and 300 K and the Meissner effect has been studied between 1.7 and 4.2 K. Both the Mössbauer effect and the magnetization indicate that Fe2Te3 undergoes a weak ferromagnetic transition at about 10 K and has an internal field of 11 kOe at the lowest temperatures. The superconducting transition predicted by Atzeri and Mula was not observed. Above 10 K the temperature variation of the susceptibility is probably a reflection of the energy dependence of the d band density of states on the Pauli spin susceptibility of the material.

Field-induced first-order ferromagnetic transition in (La0.8Eu0.2)4/3Sr5/3Mn2O7 single crystal

2019 ◽  
Vol 18 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Ru Xing ◽  
Wen-Qing Wang ◽  
Yi Lu ◽  
Jian-Jun Zhao
Keyword(s):  
Single Crystal ◽  
Ferromagnetic Transition ◽  
First Order

Charge Ordering and Ferromagnetic Transition in Single-Crystal Eu4As3

2003 ◽  
Vol 72 (12) ◽  
pp. 3174-3181 ◽  
Author(s):  
Akira Ochiai ◽  
Yuji Shima ◽  
Makoto Shirakawa
Keyword(s):  
Single Crystal ◽  
Charge Ordering ◽  
Ferromagnetic Transition

Dependence of weak-ferromagnetic transition in single crystals on the filling ratio

2007 ◽  
Vol 310 (2) ◽  
pp. e298-e300 ◽  
Author(s):  
T. Ikeno ◽  
A. Mitsuda ◽  
T. Kuwai ◽  
T. Mizushima ◽  
Y. Isikawa ◽  
...  
Keyword(s):  
Single Crystals ◽  
Filling Ratio ◽  
Ferromagnetic Transition ◽  
Weak Ferromagnetic

Quasi-one-dimensional BalrO3: On the verge of a weak ferromagnetic metallic state

2002 ◽  
Vol 12 (9) ◽  
pp. 91-92
Author(s):  
G. Cao ◽  
G. Shaw ◽  
J. W. Brill
Keyword(s):  
Phase Transition ◽  
Single Crystal ◽  
Ground State ◽  
Sharp Peak ◽  
Metallic State ◽  
Magnetization Measurements ◽  
One Dimensional ◽  
Impurity Doping ◽  
Weak Ferromagnetic

We report on calorimetric, resistivity, and magnetization measurements on single crystal BalrO3 and its derivatives. All results indicate a phase transition at $\rm T_c$=175 K, and two additional features are observed in resistivity: a sharp peak at 80 K and an upturn at 26 K. It is found that dilute impurity doping with Sr drastically suppresses $\rm T_c$ and leads to an instant nonmetal to metal transition below $\rm T_c$ underlining the instability of the ground state.

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