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Magnetic phase transitions in Gd2CuO4 and Sm2CuO4 studied by means of the magnetoelectric effect

✍ Scribed by H. Wiegelmann; A.A. Stepanov; I.M. Vitebsky; A.G.M. Jansen; P. Wyder

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
157 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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✦ Synopsis

In strong magnetic fields up to 20 T the magnetoelectric effect has been measured in the tetrag~aal antlferromagnets GdzCuO4 and Sm2CuO4 m the temperature range of 1.9 K up to TN(Gd)=6 6 K and TN(Sm)=5 8 K respectively. The magnetoelectric effect exmts only m coincidence with the antiferromagnetically ordered rale earth subsystem. From the obtained (H,T)-phase diagram critical exponents (B(Gd)=0.436 and B(Sm)=0 530) were found and it can be concluded that the intrinsic ordering of the rare earth magnetic subsystem is of 3dimensional character

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Effect of Ni and Zn substitution on magn
Effect of Ni and Zn substitution on magnetic ordering in Gd2CuO4
✍ Chin Lin; Guo Lu; Zun-Xiao; Hai-Ying Chen; Yu-Fen Zhang πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 189 KB

Ceramic samples of Gd2Cu~\_xNixO4 with x= 0, 0.03, 0.05, 0.07, 0.09 and 0.11, and Gd2Cut\_xZnxO4 with x=0.01, 0.03 and 0.05, were prepared. Magnetic measurements showed that the antiferromagnetic ordering temperature of Cu decreased due to the substitution of Cu by Ni or Zn. The effect of Ni on supp