UV-VIS SPECTRA OF SMALL IRON PARTICLES

被引：22

作者：

BLANCO, MC

MEIRA, A

BALDOMIR, D

RIVAS, J

LOPEZQUINTELA, MA

机构：

[1] M.A. López-Quintcla Chemical Physics, Applied Physics Dpts., University of Santiago

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 02期

关键词：

D O I：

10.1109/20.312393

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

UV-Vis absorption spectra of ultrafine iron particles obtained in microemulsions were measured from 290 nm up to 550 nm. It was observed the existence of three bands and a band shift towards higher energy region by 0.1-0.2 eV compared with that of bulk iron. This energy shift can be interpreted in terms of a quantum size effect. The electron-hole effective mass is evaluated to be 0.20 times the mass of a bare electron.

引用

页码：739 / 741

页数：3

共 21 条

[1] THE FERROMAGNETISM OF IRON AND NICKEL CLUSTERS IN A MOLECULAR-BEAM
BECKER, JA
DEHEER, WA
[J]. BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1992, 96 (09): : 1237 - 1243
[2] MONTE-CARLO CALCULATION OF MAGNETIZATION OF SUPERPARAMAGNETIC PARTICLES
BINDER, K
RAUCH, H
WILDPANER, V
[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1970, 31 (02) : 391 - +
[3] FOJTIK A, 1984, BER BUNSEN PHYS CHEM, V88, P969, DOI 10.1002/bbpc.19840881010
[4] GIRALDO J, 1986, WORLD SCI, P138
[5] LIZ L, 1992, THESIS U SANTIAGO SP
[6] CHEMICAL-REACTIONS IN MICROEMULSIONS - A POWERFUL METHOD TO OBTAIN ULTRAFINE PARTICLES
LOPEZQUINTELA, MA
RIVAS, J
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1993, 158 (02) : 446 - 451
[7] LOPEZQUINTELA MA, 1990, J PHYS C4, V51, P299
[8] FERROMAGNETISM IN SMALL CLUSTERS
MERIKOSKI, J
TIMONEN, J
MANNINEN, M
JENA, P
[J]. PHYSICAL REVIEW LETTERS, 1991, 66 (07) : 938 - 941
[9] SIZE QUANTIZATION IN LAYERED SEMICONDUCTOR COLLOIDS WITH TETRAHEDRAL BONDING - HGI2
MICIC, OI
NENADOVIC, MT
PETERSON, MW
NOZIK, AJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (06) : 1295 - 1297
[10] QUANTIZED COLLOIDS PRODUCED BY DISSOLUTION OF LAYERED SEMICONDUCTORS IN ACETONITRILE
PETERSON, MW
NENADOVIC, MT
RAJH, T
HERAK, R
MICIC, OI
GORAL, JP
NOZIK, AJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (06) : 1400 - 1402

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