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- W2026059572 abstract "The structural, magnetic and transport/electric properties of 1222-type niobio-cuprates, NbSr 2 ( RE 1.5 Ce 0.5 ) Cu 2 O 10 ; RE = Tb , Ho , Er compounds prepared by high pressure and high temperature synthesis conditions have been investigated and discussed briefly. In order to obtain good samples, several samples have been prepared under wide synthesis conditions between 1250°C and 1550°C for 1–2 hours at a constant high pressure of 6 GPa. The samples synthesized under extreme conditions show that they have tetragonal crystal structure with I4/mmm as a possible space group. Neither superconductivity nor magnetic ordering are seen for RE = Tb in magnetic susceptibility measurements. On the other hand, the RE = Ho compound shows magnetic transition at around 30 K. This is due to the mixed magnetic state that arises from the main 1222 phase. The RE = Er compound reveals a ferromagnetic-like transition at ~ 26 K. Unlike RE = Y , the magnetic properties of RE = Dy , Tb , Ho , Er compounds are found to be insensitive to the synthesis conditions. None of the samples showed zero resistance (bulk superconductivity) transitions and all samples reveal semiconducting characteristics. The sample with RE = Ho shows relatively low resistivity compared to the other two samples ( RE = Tb , Er ). All the samples show temperature and field dependence of magnetoresistance about 1–6%. The nearly linear dependence suggests that hopping conduction is dominant in a certain temperature range for all the three studied compounds." @default.
- W2026059572 created "2016-06-24" @default.
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- W2026059572 date "2010-05-10" @default.
- W2026059572 modified "2023-09-26" @default.
- W2026059572 title "SYNTHESES, MAGNETIC AND TRANSPORT PROPERTIES OF NbSr2(RE1.5Ce0.5)Cu2O10; RE = Tb, Ho, Er SERIES" @default.
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- W2026059572 doi "https://doi.org/10.1142/s0217984910023086" @default.
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