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Structural and Magnetic Properties of RBa2Cu2NbO8 (R = La, Pr, Nd)

  • H. B. Radousky (a1) (a2), J. C. O'Brien (a1), M. Bennahmias (a1), P. Klavins (a2), C. A. Smith (a2), J. M. Link (a2), T. J. Goodwin (a2) and R. N. Shelton (a2)...

Abstract

PrBa2Cu2NbO8 (PrBCNO) is an insulating analog to the YB2CU3O7 (YBCO) system, which is interesting as a thin film buffer layer in YBCO/PrBCNO/YBCO tunnel junctions as well as a potential high Tc superconductor if proper doping could be achieved. PrBCNO has a similar structure to PrBCO, with NbO2 planes replacing the CuO chains. Single phase polycrystalline samples of RBCNO have been synthesized with R = La, Pr and Nd. Attempts to synthesize this structure with the smaller ions Y and Gd have been unsuccessful. The PrBCNO samples show a signature in the magnetization of a magnetic ordering at 12 K. No such magnetic phase transition is observed down to 2 K in the NdBCNO material.

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Structural and Magnetic Properties of RBa2Cu2NbO8 (R = La, Pr, Nd)

  • H. B. Radousky (a1) (a2), J. C. O'Brien (a1), M. Bennahmias (a1), P. Klavins (a2), C. A. Smith (a2), J. M. Link (a2), T. J. Goodwin (a2) and R. N. Shelton (a2)...

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