Structural and unique magnetic properties of PrBa2Fe3O8

被引：9

作者：

Felner, I

Hilscher, G

Michor, H

Wortmann, G

Dumschat, J

Awana, VPS

Malik, SK

机构：

[1] VIENNA TECH UNIV,INST PHYS EXPT,A-1040 VIENNA,AUSTRIA

[2] UNIV GESAMTHSCH PADERBORN,FACHBEREICH PHYS,D-33095 PADERBORN,GERMANY

[3] TATA INST FUNDAMENTAL RES,BOMBAY 400005,MAHARASHTRA,INDIA

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.54.11999

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tetragonal PrBa2Fe3O8 exhibits a unique magnetic behavior and behaves differently from both PrBa2Cu3O7 and all RBa(2)Fe(3)O(8) materials. Magnetic-susceptibility study reveals two anomalies at 23 and 55 K which are sensitive to oxygen concentration, but no specific heat anomaly was observed at either temperature. Mossbauer studies reveal two inequivalent iron sites, which order antiferromagnetically at approximate to 230 K, in contrast to 670 K in RBa(2)Fe(3)O(8). X-ray absorption spectra indicate that Pr is trivalent. In contrast to PrBa2Cu3O7 [T-N(Pr)=17 K] Pr in PrBa2Fe3O8 does not order magnetically. The anomalies at 23 and 55 K are probably related to spin reorientation of Fe moments.

引用

页码：11999 / 12002

页数：4

共 14 条

[1] Structural and magnetic studies on PrBa2Fe3O8 [J].

Awana, VPS ;

Menon, L ;

Malik, SK ;

Mehta, A ;

Mishra, S ;

Yelon, WB .

PHYSICA B-CONDENSED MATTER, 1996, 223-24 (1-4) :558-561

[2] OXYGEN DEPENDENCE OF THE MAGNETIC-ANOMALIES IN PR1.5CE0.5SR2NBCU2O10 [J].

FELNER, I ;

YARON, U ;

ASAF, U ;

KRONER, T ;

BREIT, V .

PHYSICAL REVIEW B, 1994, 49 (10) :6903-6912

[3] MAGNETIC-PROPERTIES, SPECIFIC-HEAT STUDIES AND MOSSBAUER MEASUREMENTS OF PRBA2NBCU2O8 [J].

FELNER, I ;

ASAF, U ;

HECHEL, D ;

YARON, U ;

KRONER, T .

PHYSICA C, 1993, 214 (1-2) :169-174

[4] MAGNETIC-PROPERTIES, MOSSBAUER, AND SPECIFIC-HEAT STUDIES OF RBA2FE3O8(R=Y,EU) COMPOUNDS [J].

FELNER, I ;

NOWIK, I ;

YARON, U ;

COHEN, O ;

BAUMINGER, ER ;

KROENER, T ;

CZJZEK, G .

PHYSICAL REVIEW B, 1993, 48 (21) :16040-16046

[5] MAGNETIC ORDER AND SUPERCONDUCTIVITY IN Y1-XPRXBA2CU3O7 [J].

FELNER, I ;

YARON, U ;

NOWIK, I ;

BAUMINGER, ER ;

WOLFUS, Y ;

YACOBY, ER ;

HILSCHER, G ;

PILLMAYR, N .

PHYSICAL REVIEW B, 1989, 40 (10) :6739-6744

[6] LOW-TEMPERATURE SPECIFIC-HEAT OF THE Y1-XPRXBA2CU3O7-DELTA SYSTEM [J].

GHAMATY, S ;

LEE, BW ;

NEUMEIER, JJ ;

NIEVA, G ;

MAPLE, MB .

PHYSICAL REVIEW B, 1991, 43 (07) :5430-5436

[7]

HANG Q, 1992, PHYS REV B, V45, P9611

[8] VALENCE OF PRASEODYMIUM IN PRXY1-XBA2CU3O7-DELTA - INELASTIC-NEUTRON-SCATTERING, SPECIFIC-HEAT, AND SUSCEPTIBILITY STUDY [J].

HILSCHER, G ;

HOLLANDMORITZ, E ;

HOLUBAR, T ;

JOSTARNDT, HD ;

NEKVASIL, V ;

SCHAUDY, G ;

WALTER, U ;

FILLION, G .

PHYSICAL REVIEW B, 1994, 49 (01) :535-550

[9]

HILSCHER G, 1994, PHYSICA C, V244, P330

[10] THE EFFECT OF CHEMICAL PRESSURE UPON THE MAGNETISM OF (BA1-XSRX)2PRNBCU2O8 [J].

MICHOR, H ;

VYBORNOV, M ;

HOLUBAR, T ;

PERTHOLD, W ;

SCHAUDY, G ;

HILSCHER, G ;

ROGL, P .

PHYSICA C, 1994, 226 (1-2) :1-11

← 1 2 →