TY - JOUR
T1 - Protected Vacuum Annealing Effect on Single Crystals of Pr1-xLaCe x CuO4 in the Overdoped Regime
AU - Baqiya, M. A.
AU - Triono, B.
AU - Darminto,
AU - Adachi, T.
AU - Takahashi, A.
AU - Konno, T.
AU - Watanabe, M.
AU - Prombood, T.
AU - Koike, Y.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/5/20
Y1 - 2017/5/20
N2 - We report the effect of protected vacuum annealing on the superconducting (SC) and magnetic properties of Pr1-xLaCe x CuO4 (PLCCO) single crystals in the overdoped regime (x = 0.13 - 0.20). The powders and single crystals of PLCCO with all x were synthesized by the solid state reaction and grown by the travelling solvent floating zone (TSFZ) method, respectively. The powder x-ray diffraction (XRD) results analyzed by the Rietveld method have shown that there is a systematic decrease in the c-axis length with increasing x, suggesting the proper substitution of Ce for Pr in overdoped PLCCO up to x = 0.20. The so-called two-step annealing performed in the overdoped regime was essential for increasing the SC volume fraction estimated from the magnetic susceptibility measurements. Furthermore, the temperature dependence of the normal-state magnetic susceptibility for reduced crystals of PLCCO with all x has exhibited a Curie-Weiss-like behavior regardless of various steps of the protected vacuum annealing process.
AB - We report the effect of protected vacuum annealing on the superconducting (SC) and magnetic properties of Pr1-xLaCe x CuO4 (PLCCO) single crystals in the overdoped regime (x = 0.13 - 0.20). The powders and single crystals of PLCCO with all x were synthesized by the solid state reaction and grown by the travelling solvent floating zone (TSFZ) method, respectively. The powder x-ray diffraction (XRD) results analyzed by the Rietveld method have shown that there is a systematic decrease in the c-axis length with increasing x, suggesting the proper substitution of Ce for Pr in overdoped PLCCO up to x = 0.20. The so-called two-step annealing performed in the overdoped regime was essential for increasing the SC volume fraction estimated from the magnetic susceptibility measurements. Furthermore, the temperature dependence of the normal-state magnetic susceptibility for reduced crystals of PLCCO with all x has exhibited a Curie-Weiss-like behavior regardless of various steps of the protected vacuum annealing process.
UR - http://www.scopus.com/inward/record.url?scp=85019685961&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/196/1/012011
DO - 10.1088/1757-899X/196/1/012011
M3 - Conference article
AN - SCOPUS:85019685961
SN - 1757-8981
VL - 196
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012011
T2 - 3rd International Conference on Functional Materials Science 2016, ICFMS 2016
Y2 - 19 October 2016 through 20 October 2016
ER -