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
收藏
页码：12190 / 12196
页数：7
相关论文
共 24 条
[1]  
ANSALDO EJ, 1992, PHYS REV B, V46, P3080
[2]   THE CRYSTAL-STRUCTURE OF THE LA1.6SR0.4CACU2O6+1-DELTA SUPERCONDUCTOR [J].
CAVA, RJ ;
SANTORO, A ;
KRAJEWSKI, JJ ;
FLEMING, RM ;
WASZCZAK, JV ;
PECK, WF ;
MARSH, P .
PHYSICA C, 1990, 172 (1-2) :138-142
[3]   SUPERCONDUCTIVITY AT 60-K IN LA2-XSRXCACU2O6 - THE SIMPLEST DOUBLE-LAYER CUPRATE [J].
CAVA, RJ ;
BATLOGG, B ;
VANDOVER, RB ;
KRAJEWSKI, JJ ;
WASZCZAK, JV ;
FLEMING, RM ;
PECK, WF ;
RUPP, LW ;
MARSH, P ;
JAMES, ACWP ;
SCHNEEMEYER, LF .
NATURE, 1990, 345 (6276) :602-604
[4]   OXYGEN DEPENDENCE OF THE LINEAR TERM IN THE SPECIFIC-HEAT OF YBA2CU3O7-DELTA [J].
COLLOCOTT, SJ ;
DRIVER, R ;
VANCE, ER .
PHYSICAL REVIEW B, 1990, 41 (10) :6329-6334
[5]   COMPETITION BETWEEN SUPERCONDUCTIVITY AND ANTIFERROMAGNETISM IN CU(2) LAYERS OF Y1-XPRXBA2CU3-YFEYOZ, Y1-XPRXBA2CU3-YCOYOZ, Y1-XPRXBA2CU3-YZNYOZ [J].
FELNER, I ;
NOWIK, I ;
BAUMINGER, ER ;
HECHEL, D ;
YARON, U .
PHYSICAL REVIEW LETTERS, 1990, 65 (15) :1945-1948
[6]   SUPERCONDUCTIVITY AND MAGNETIC ORDER IN THE CU(2) PLANES IN FE-DOPED YBA2CU4O8 [J].
FELNER, I ;
NOWIK, I ;
BROSH, B ;
HECHEL, D ;
BAUMINGER, ER .
PHYSICAL REVIEW B, 1991, 43 (10) :8737-8740
[7]   RELATION BETWEEN SPECIFIC HEAT AND SUSCEPTIBILITY OF AN ANTIFERROMAGNET [J].
FISHER, ME .
PHILOSOPHICAL MAGAZINE, 1962, 7 (82) :1731-&
[8]   LA2-XBAXSR1-XYXCU2O6 AND PR1.9SR1.1CU2O6 AND ND1.9SR1.1CU2O6 - NEW LAYERED COPPER-OXIDES WITH THE LA2SRCU2O6 STRUCTURE [J].
HAYRI, EA ;
LARESE, JZ .
PHYSICA C, 1990, 170 (3-4) :239-244
[9]   MAGNETIC ORDER AND SUPERCONDUCTIVITY IN YBA2CU3-YFEOZ, YBA2CU3-YCOOZ [J].
HECHEL, D ;
NOWIK, I ;
BAUMINGER, ER ;
FELNER, I .
PHYSICAL REVIEW B, 1990, 42 (04) :2166-2173
[10]  
Junod A., 1990, PHYSICAL PROPERTIES, P13
123