Consequence of isovalent rare earth substitution to magnetic irreversibility in cation-stoichiometric CuBa[sub 2]RECu[sub 2]O[sub 6.93±0.01]

Yasukawa, Yukiko; Nakane, Takayuki; Yamauchi, Hisao; Karppinen, Maarit
May 2001
Applied Physics Letters;5/7/2001, Vol. 78 Issue 19, p2917
Academic Journal
For a series of CuBa[sub 2]RECu[sub 2]O[sub 7-δ] (Cu-1[sup (Ba)]2[sup RE]12; RE= rare earth element) single-phase cation-stoichiometric samples with a fixed oxygen content, δ=0.07±0.01, a clear dependence of the H[sub irr] characteristics on the ionic radius of RE is revealed. With decreasing ionic radius of RE, the H[sub irr] characteristics are remarkably enhanced such that the samples containing heavy REs exhibit very high H[sub irr] values. This result implies that through isovalent cation substitution alone carrier-density distribution and thereby the superconductivity characteristics may be controlled. © 2001 American Institute of Physics.


Related Articles

  • Kinetics of the irreversible propagation of a thermal instability in the presence of a nonuniform temperature distribution over the cross section of a superconducting composite. Romanovskiı, V. R. // Technical Physics;Jan98, Vol. 43 Issue 1, p47 

    The conditions for the irreversible propagation of a normal zone along a composite superconductor are investigated within the model of a continuous medium with consideration of its transverse thermal conductivity under the assumption of a uniform distribution of the current over the cross...

  • Irreversibility field and superconducting screening currents in EuBa[sub 2]Cu[sub 3]O[sub 7] films. Senapati, K.; Sahoo, Leena K.; Pandey, N. K.; Budhani, R. C. // Applied Physics Letters;1/28/2002, Vol. 80 Issue 4, p619 

    Measurements of the critical current density (J[sub c]) and irreversibility field [B[sub irr](T)] of epitaxial, c-axis-oriented EuBa[sub 2]Cu[sub 3]O[sub 7] (Eu-123) films are reported. The transition temperature (T[sub c]), J[sub c], and B[sub irr](T) of these pulsed-laser-deposited films...

  • Surface spin disorder in ferrite nanoparticles (invited). Kodama, R.H.; Berkowitz, A.E. // Journal of Applied Physics;4/17/1997, Vol. 81 Issue 8, p5552 

    Reports on the observation of high field irreversibility in the moment versus field and moment versus temperature of NiFe2O4 nanoparticles. Onset temperature of the irreversibility; Numerical model presented; Barrier heights calculated.

  • The effects of intrinsic coercivity on the thermal stability of Sm(Co0.70Fe0.21Cu0.06Zr0.03)7.6... Ma, B.M.; Liang, Y.L. // Journal of Applied Physics;4/17/1997, Vol. 81 Issue 8, p5612 

    Examines the effects of Hci and loop squareness on the irreversible loss and alpha on Sm(Co0.70Fe0.21Cu0.06Zr0.03)7.6 sintered magnets. Lower irreversible loss yielded by magnets with higher Hci.

  • Maximum power and thermal efficiency of an irreversible power cycle. Ait-Ali, Mohand A. // Journal of Applied Physics;10/1/1995, Vol. 78 Issue 7, p4313 

    Presents a study that modeled a Carnot-like irreversible power cycle with isothermal and adiabatic, irreversible processes. Comparison between the performances of the irreversible power cycle and those of the endoreversible cycle; Influence of internal irreversibilities in general; Formulation...

  • The classical Preisach model of hysteresis and reversibility. Mayergoyz, I. D. // Journal of Applied Physics;4/15/1991, Vol. 69 Issue 8, p4602 

    Presents a study that derived a new form for the classical Preisach model of hysteresis which gives the decomposition of the model into reversible and irreversible components. Definition of the classical Preisach model; Step by step procedure in derivation of the model; Geometric illustration...

  • Mechanically reversible conductor–insulator transition in Mg[sub 2]NiH[sub 4]. Blomqvist, Helen; Nore´us, Dag // Journal of Applied Physics;4/15/2002, Vol. 91 Issue 8, p5141 

    An irreversible conductor-insulator transition has been observed when heating Mg[sub 2]NiH[sub 4] in the temperature interval 110 to 570 K. The disappearance of the electric conductivity is concomitant with the appearance of stacking faults (or microtwinning) in the Mg[sub 2]NiH[sub 4]...

  • Windows and credit in irreversibility. Phillips, J. C. // Physics Today;Aug2007, Vol. 60 Issue 8, p14 

    A letter to the editor is presented in response to the article "Microscopic Irreversibility and Chaos," by Jerry Gollub and David Pine in the August 2006 issue.

  • Windows and credit in irreversibility. Gollub, Jerry; Pine, David // Physics Today;Aug2007, Vol. 60 Issue 8, p14 

    A response by Jerry Gollub and David Pine to letters to the editor about their article "Microscopic Irreversibility and Chaos" in the August 2006 issue is presented.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics