STRUCTURAL AND MAGNETIC-PROPERTIES OF YBA2FE3O7+X - FE-BASED 1-2-3 CERAMIC OXIDE

被引：14

作者：

ELMASSALAMI, M

ELZUBAIR, A

IBRAHIM, HM

RIZGALLA, MA

机构：

[1] Physics Department, Khartoum University, Khartoum

来源：

PHYSICA C | 1991年 / 183卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90777-V

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The YBa2Fe3O7+x (x = 0.69) compound, synthesized through normal ceramic routes, is found to have an orthorhombic structure (Pmmm, a = 3.9078(11), b = 3.9406(4), c= 11.7292(37)) with Fe3+ occupying two nonequivalent sites (1a and 2q). Mossbauer studies (MES) reveal an AFM order with a B(eff) that follows a S = 5/2 Brillouin function, giving B(eff)(T = 0) = (48.5 +/- 0.5) T and T(N) = (1020 +/- 10) K. Due to their highly symmetric character, the (6S) Fe3+ ions are insensitive to their surrounding electronic environment, consequently a single set (rather than two sets) of hyperfine parameters, is reflected in MES spectra. Based on the above results, as well as on data published, some comments are given regarding the interpretation of the MES results of the much studied YBa2(Cu(1-y)Fe(y))3O7-z system.

引用

收藏

页码：143 / 148

页数：6

相关论文

共 45 条

[31] MOSSBAUER HYPERFINE FIELDS IN RBA2(CU0.97FE0.03)3O7-CHI [R=Y, PR,ER] [J].

RUBINSTEIN, M ;

HARFORD, MZ ;

SWARTZENDRUBER, LJ ;

BENNETT, LH .

JOURNAL DE PHYSIQUE, 1988, 49 (C-8) :2209-2210

[32] MOSSBAUER SPECTROSCOPIC STUDY OF FE-DOPED SUPERCONDUCTING CU-OXIDES [J].

SHINJO, T ;

NASU, S ;

KOHARA, T ;

TAKABATAKE, T ;

ISHIKAWA, M .

JOURNAL DE PHYSIQUE, 1988, 49 (C-8) :2207-2208

[33] SUPERCONDUCTING PROPERTIES OF SUBSTITUTED YBA2CU3(1-X)M3XO7-DELTA [J].

STROBEL, P ;

PAULSEN, C ;

THOLENCE, JL .

SOLID STATE COMMUNICATIONS, 1988, 65 (07) :585-589

[34] THE CHARGE STATE OF FE-57 DOPED INTO YBA2CU3O7-X [J].

SUHARAN, S ;

JOHNSON, CE ;

JONES, DH ;

THOMAS, MF ;

DRIVER, R .

SOLID STATE COMMUNICATIONS, 1988, 67 (02) :125-127

[35] MOSSBAUER STUDIES OF SITE PREFERENCE, RELAXATION AND MAGNETIC ORDER IN YBA2(CU1-XFEX)3O7-DELTA [J].

SUHARAN, S ;

CHADWICK, J ;

HANNON, DB ;

JONES, DH ;

THOMAS, MF .

SOLID STATE COMMUNICATIONS, 1989, 70 (08) :817-821

[36] DC SUSCEPTIBILITY AND MAGNETIZATION OF YBA2CU3-XFEXO7-DELTA(0 LESS-THAN X LESS-THAN 0.1) [J].

SURYANARAYANAN, R ;

BHANDAGE, GT ;

GOROCHOV, O ;

RATEAU, M ;

VILLERS, G ;

PANKOWSKA, H .

SOLID STATE COMMUNICATIONS, 1989, 70 (01) :47-51

[37] BEHAVIOR OF FE IMPURITY IN YBA2CU3OY STUDIED BY MOSSBAUER-SPECTROSCOPY [J].

TAKANO, M ;

TAKEDA, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1987, 26 (11) :L1862-L1864

[38] STRUCTURAL AND PHYSICAL-PROPERTIES OF THE METAL (M) SUBSTITUTED YBA2CU3-XMXO7-Y PEROVSKITE [J].

TARASCON, JM ;

BARBOUX, P ;

MICELI, PF ;

GREENE, LH ;

HULL, GW ;

EIBSCHUTZ, M ;

SUNSHINE, SA .

PHYSICAL REVIEW B, 1988, 37 (13) :7458-7469

[39]

TARASCON JM, 1988, MAT RES SOC S P, V99, P523

[40] SUPERCONDUCTIVITY MAGNETISM AND LOW-TEMPERATURE SPECIFIC-HEAT IN YBA2(CU1-XFEX)3O7-DELTA WITH DELTA-CONGRUENT-TO-O AND DELTA-CONGRUENT-TO-1 [J].

VILMINOT, S ;

KUENTZLER, R ;

DOSSMANN, Y ;

DERORY, A ;

DRILLON, M .

PHYSICA C, 1989, 160 (5-6) :575-583

← 1 2 3 4 5 →