MAGNETIC-PROPERTIES, MOSSBAUER MEASUREMENTS, AND SPECIFIC-HEAT STUDIES OF LA2MCU2O6 (M = CA OR SR) COMPOUNDS

被引：12

作者：

FELNER, I

HECHEL, D

YACOBY, ER

HILSCHER, G

HOLUBAR, T

SCHAUDY, G

机构：

[1] BAR ILAN UNIV,DEPT PHYS,IL-52100 RAMAT GAN,ISRAEL

[2] VIENNA TECH UNIV,A-1040 VIENNA,AUSTRIA

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.47.12190

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic-susceptibility powder-x-ray-diffraction Mossbauer studies on Fe-57-doped samples an specific-heat measurements were used to study the magnetic nature of La2MCu2O6 and La1.6Sr0.4CaCu2O6 materials. The fivefold pyramidal coordination of the double CUO2 planes is similar to that of the Cu(2) site in YBa2Cu3Oz 6 < z < 7. All the compounds studied are not superconducting and order antiferromagnetically at T(N) = 10-20 K, which is extremely low as compared with T(N) = 420 K, obtained for nonsuperconducting YBa2CuO3. The presence of Fe does not affect T(N). The specific-heat curves do not show any anomaly at T(N), and the electronic specific-heat coefficient is around 4 mJ/mol K2.

引用

页码：12190 / 12196

页数：7

共 24 条

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