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Anomalous Low Resistivity at Room and Elevated Temperatures of Manganin Alloy Implanted with High Dose Niobium Ions

100%

Wiśniewski R., Wilczyńska T.

Acta Physica Polonica A

2011

vol. 120

issue 6

1080-1083

The anomalous low resistivity metallic material at room temperature has been discovered. Known high resistive material called manganin in form of 10 μm thick foil was one side implanted with high dose of niobium ions of 2.5 × 10^{17} Nb ions/cm^2 and then with 2.5 × 10^{13} Kr ions/cm^2. Before and after implantation procedure investigated manganin foils were temperature treated in 130°C during 100 h. Basic resistance measurements were performed just after implantation observing large decrease of its resistivity. In repeated measurements after long time later (about twelve months), at temperature of 22°C, practically no resistivity was measured. Four-terminal method for resistance measurements was used.

Compressibility of AgI-Ag_{2}MoO_{4} System Measured in Wide Range of Composition

81%

Wiśniewski Z., Wiśniewski R., Wilczyńska T.

issue 4

601-602

Results of compressibility measurements of AgI-Ag_{2}MoO_{4} materials for different concentrations of AgI were presented. The obtained results were compared with phase diagram and internal structure of material. It was found that observed values of compressibility coefficient can be related to internal structure of investigated material.

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2 Acta Physica Polonica A

1 2011

1 2010

2 Wilczyńska T.

2 Wiśniewski R.

1 Wiśniewski Z.

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Anomalous Low Resistivity at Room and Elevated Temperatures of Manganin Alloy Implanted with High Dose Niobium Ions

Compressibility of AgI-Ag_{2}MoO_{4} System Measured in Wide Range of Composition