Mossbauer spectroscopy of Fe-57 in the compounds R(Ni0.99Fe0.01)(2)B2C (R=Y,Gd,Tb,Dy,Ho,Er): Theory and experiment

被引：8

作者：

Zeng, Z

Sanchez, DR

Guenzburger, D

Ellis, DE

BaggioSaitovitch, EM

Micklitz, H

机构：

[1] NORTHWESTERN UNIV, DEPT PHYS & ASTRON, EVANSTON, IL 60208 USA

[2] NORTHWESTERN UNIV, MAT RES CTR, EVANSTON, IL 60208 USA

[3] UNIV COLOGNE, INST PHYS, D-50937 COLOGNE, GERMANY

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.55.3087

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe-57 Mossbauer spectroscopy measurements were performed for the Fe impurities in the substituted compounds R(Ni0.99Fe0.01)(2)B2C (R=Y,Gd,Tb,Dy,Ho,Er). Isomer shifts and quadrupole splittings were obtained; the latter were seen to correlate to the ratio cia of the lattice constants. Isomer shifts show very similar values for compounds with different rare earths. First-principles density-functional calculations for 71-atom embedded clusters representing the compounds were performed. Quadrupole splittings at the Fe site were obtained from the calculations, and the origin of the trend observed was elucidated.

引用

收藏

页码：3087 / 3092

页数：6

相关论文

共 24 条

[1] EFFECT OF THE NI SITE SUBSTITUTION ON SUPERCONDUCTING PROPERTIES OF YNI2B2C [J].

BUDKO, SL ;

ELMASSALAMI, M ;

FONTES, MB ;

MONDRAGON, J ;

VANONI, W ;

GIORDANENGO, B ;

BAGGIOSAITOVITCH, EM .

PHYSICA C, 1995, 243 (1-2) :183-186

[2] MAGNETIC-PROPERTIES OF THE GD(NI1-XCOX)(2)B2C SERIES - MACROSCOPIC AND MICROSCOPIC STUDIES [J].

BUDKO, SL ;

FONTES, MB ;

ALIAGAGUERRA, D ;

BAGGIOSAITOVITCH, EM .

PHYSICAL REVIEW B, 1995, 52 (01) :305-309

[3] SUPERCONDUCTIVITY IN THE QUATERNARY INTERMETALLIC COMPOUNDS LNNI2B2C [J].

CAVA, RJ ;

TAKAGI, H ;

ZANDBERGEN, HW ;

KRAJEWSKI, JJ ;

PECK, WF ;

SIEGRIST, T ;

BATLOGG, B ;

VANDOVER, RB ;

FELDER, RJ ;

MIZUHASHI, K ;

LEE, JO ;

EISAKI, H ;

UCHIDA, S .

NATURE, 1994, 367 (6460) :252-253

[4] SUPERCONDUCTIVITY IN RPT2B2C [J].

CAVA, RJ ;

BATLOGG, B ;

SIEGRIST, T ;

KRAJEWSKI, JJ ;

PECK, WF ;

CARTER, S ;

FELDER, RJ ;

TAKAGI, H ;

VANDOVER, RB .

PHYSICAL REVIEW B, 1994, 49 (17) :12384-12387

[5] ONSET OF SUPERCONDUCTIVITY IN THE ANTIFERROMAGNETICALLY ORDERED STATE OF SINGLE-CRYSTAL DYNI2B2C [J].

CHO, BK ;

CANFIELD, PC ;

JOHNSTON, DC .

PHYSICAL REVIEW B, 1995, 52 (06) :R3844-R3847

[6] MAGNETIC AND SUPERCONDUCTING PROPERTIES OF SINGLE-CRYSTAL TMNI2B2C [J].

CHO, BK ;

XU, M ;

CANFIELD, PC ;

MILLER, LL ;

JOHNSTON, DC .

PHYSICAL REVIEW B, 1995, 52 (05) :3676-3683

[7] MAGNETISM AND SUPERCONDUCTIVITY IN SINGLE-CRYSTAL ERNI2B2C [J].

CHO, BK ;

CANFIELD, PC ;

MILLER, LL ;

JOHNSTON, DC ;

BEYERMANN, WP ;

YATSKAR, A .

PHYSICAL REVIEW B, 1995, 52 (05) :3684-3695

[8] EFFICIENT AND ACCURATE EXPANSION METHODS FOR MOLECULES IN LOCAL DENSITY MODELS [J].

DELLEY, B ;

ELLIS, DE .

JOURNAL OF CHEMICAL PHYSICS, 1982, 76 (04) :1949-1960

[9] DETERMINATION OF THE NUCLEAR-QUADRUPOLE MOMENT OF FE-57 [J].

DUFEK, P ;

BLAHA, P ;

SCHWARZ, K .

PHYSICAL REVIEW LETTERS, 1995, 75 (19) :3545-3548

[10] Discrete variational method for the energy-band problem with general crystal potentials [J].

Ellis, D. E. ;

Painter, G. S. .

PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (08) :2887-2898