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Thermodynamics And Concentration Fluctuations Of Liquid Al-Cu And Al-Zn Alloys

100%

Trybuła M., Gąsior W., Jakse N., Pasturel A.

Archives of Metallurgy and Materials

2015

issue 2

Superconducting Regions and Kondo Effect of MgB_2 Formed by Implantation of Magnesium Ions into Boron Substrate

64%

Trybuła Z., Kempiński W., Andrzejewski B., Piekara-Sady L., Kaszyński J., Trybuła M., Piekoszewski J., Stanisławski J., Barlak M., Richter E.

Acta Physica Polonica A

2006

vol. 109

issue 4-5

657-660

The results of investigation of the polycrystalline boron implanted by magnesium and argon plasma pulse treatment are presented. The four-probe electric conductivity measurements and magnetically modulated microwave absorption showed the presence of superconducting islands below the temperature of 25 K. Below T=23 K we detected the Kondo effect, a logarithmic increase in the resistivity as the temperature is lowered, due to iron impurity.

Superconductivity of MgB_2 Layers Prepared on Silicon Substrate by Implantation of Magnesium Ions into Boron Substrate

64%

Trybuła Z., Kempiński W., Łoś S., Kaszyńska K., Trybuła M., Piekoszewski J., Werner Z., Barlak M.

issue 2

323-325

The results of investigation of the MgB_2 layers prepared on silicon substrate by implantation of Mg ions into boron substrate are presented. After implantation the annealing processes were carried out at temperatures 673 K, 773 K, and 873 K in a furnace in an atmosphere of flowing Ar-4%H_2 gas mixture. The samples were characterized by: four-probe electric conductivity measurements and magnetically modulated microwave absorption. Our results showed that due to silicon substrate the diffusion of implanted Mg ions into boron materials should be limited, and the superconducting phase forms a continuous MgB_2 layer and the resistivity for all samples fall down to zero below T_{c}. The transition temperature T_{c} becomes higher with increasing annealing temperature: T_{c}=18 K (for annealing at T_{A}=673 K), T_{c}=20 K (for annealing at T_{A}=773 K), and T_{c}=27 K (for annealing at T_{A}=873 K).

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2 Acta Physica Polonica A

1 Archives of Metallurgy and Materials

1 2015

1 2010

1 2006

3 Trybuła M.

2 Barlak M.

2 Kempiński W.

2 Piekoszewski J.

2 Trybuła Z.

1 Andrzejewski B.

1 Gąsior W.

1 Jakse N.

1 Kaszyńska K.

1 Kaszyński J.

1 Pasturel A.

1 Piekara-Sady L.

1 Richter E.

1 Stanisławski J.

1 Werner Z.

1 Łoś S.

Search results

Thermodynamics And Concentration Fluctuations Of Liquid Al-Cu And Al-Zn Alloys

Superconducting Regions and Kondo Effect of MgB_2 Formed by Implantation of Magnesium Ions into Boron Substrate

Superconductivity of MgB_2 Layers Prepared on Silicon Substrate by Implantation of Magnesium Ions into Boron Substrate