G. Papavassiliou

activity

20002005

collaborators

4 papers

cond-mat.supr-con2005

Mössbauer study of Na $_{0.82}$ CoO $_{2}$ (doped by 1% $^{57}$ Fe)

M. Pissas, V. Psycharis, D. Stamopoulos +3

We studied by Mössbauer spectroscopy the Na $_{0.82}$ CoO $_{2}$ compound using 1% $^{57}$ Fe as a local probe which substitutes for the Co ions. Mössbauer spectra at T=300 K revealed tw…

cond-mat.str-el2004

Domain orbital state in ferromagnetic insulating La $_{0.825}$ Ca $_{0.175}$ Mn $_{0.99}$ $^{57}$ Fe $_{0.01}$ O $_{3}$ compound

M. Pissas, G. Papavassiliou, E. Devlin +2

Using Mössbauer and EPR spectroscopy we have studied the insulating ferromagnetic La $_{1 - x}$ Ca $_{x}$ Mn $_{0.99}$ $^{57}$ Fe $_{0.01}$ O $_{3}$ ( $x = 0.175$ ) compound prepared in air and reduce…

cond-mat.str-el2002

Disorder-driven magnetic field-dependent phases in an organic conductor

K. Storr, D. Graf, J. S. Brooks +3

We report inter-plane ( $R_{z z}$ ) electrical transport measurements in the \tp series of organic conductors at very high magnetic fields. In the field range between 36 and 60 T $R_{…

cond-mat.str-el2000

Electronic Structure of Novel Cation-Radical Salts in High Magnetic Fields

J. S. Brooks, L. Balicas, K. Storr +10

Two organic conducting materials, where unusual aspects of their composition play important roles, are explored: beta''-(BEDT-TTF)2SF5XSO3 which exhibits superconductivity, or a me…

Mössbauer study of Na0.82​CoO2​ (doped by 1% 57Fe)

Domain orbital state in ferromagnetic insulating La0.825​Ca0.175​Mn0.99​57Fe0.01​O3​ compound

Disorder-driven magnetic field-dependent phases in an organic conductor

Electronic Structure of Novel Cation-Radical Salts in High Magnetic Fields

Mössbauer study of Na $_{0.82}$ CoO $_{2}$ (doped by 1% $^{57}$ Fe)

Domain orbital state in ferromagnetic insulating La $_{0.825}$ Ca $_{0.175}$ Mn $_{0.99}$ $^{57}$ Fe $_{0.01}$ O $_{3}$ compound