Magnetic interactions in diluted systems from low temperature magnetization steps

被引:12
作者
Bindilatti, V [1 ]
Oliveira, NF [1 ]
terHaar, E [1 ]
Shapira, Y [1 ]
机构
[1] TUFTS UNIV,DEPT PHYS & ASTRON,MEDFORD,MA 02155
关键词
D O I
10.1007/BF02548138
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In diluted magnetic systems, field induced level crossings can change the magnetic moment of the ground state of spin clusters. At low enough temperatures this will lead to steps in the magnetization vs. field curves, from which a variety of information can be extracted. Using a sensitive magnetometer operating below 50 mK, we have studied: 1) the dominant antiferromagnetic exchange constant between Eu++ ions in IV-VI Diluted Magnetic Semiconductors (DMSs); 2) distant-neighbor exchange constants in II-VI DMSs; 3) crystal field parameters for Co++ ions in CdS and CdSe; 4) the distribution of Jahn-Teller distortions for Cr++ ions in ZnTe; and 5) inequivalent nearest neighbors exchange constants in Cd1-xMnxSe. Selected results and a description of the apparatus are presented.
引用
收藏
页码:3255 / 3262
页数:8
相关论文
共 33 条
  • [1] AGGARWAL RL, 1985, P 17 INT C PHYS SEM, P419
  • [2] ENERGY-LEVEL CROSSING OF THE NI++ ION INDUCED BY MAGNETIC-FIELD IN NISNCL6.6H2O AND ALPHA-NISO4.6H2O
    BECERRA, CC
    PADUAN, A
    OLIVEIRA, NF
    [J]. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1985, 129 (02): : K173 - K175
  • [3] AXIAL ANISOTROPY OF CO2+ IN CDS FROM MAGNETIZATION-STEP AND HIGH-FREQUENCY EPR
    BINDILATTI, V
    ANISIMOV, AN
    OLIVEIRA, NF
    SHAPIRA, Y
    GOIRAN, M
    YANG, F
    ISBER, S
    AVEROUS, M
    DEMIANIUK, M
    [J]. PHYSICAL REVIEW B, 1994, 50 (22): : 16464 - 16467
  • [4] SPLIT MAGNETIZATION STEPS IN CD1-XMNXSE - INEQUIVALENT NEAREST NEIGHBORS AND THE DZYALOSHINSKI-MORIYA INTERACTION
    BINDILATTI, V
    VU, TQ
    SHAPIRA, Y
    AGOSTA, CC
    MCNIFF, EJ
    KERSHAW, R
    DWIGHT, K
    WOLD, A
    [J]. PHYSICAL REVIEW B, 1992, 45 (10): : 5328 - 5338
  • [5] OPERATION OF A DIAPHRAGM MAGNETOMETER IN A PLASTIC DILUTION REFRIGERATOR, WITH AN OSCILLATING FIELD GRADIENT
    BINDILATTI, V
    OLIVEIRA, NF
    [J]. PHYSICA B, 1994, 194 : 63 - 64
  • [6] Magnetization steps in Ph(1-x)Eu(x)Se: Determination and identification of the dominant antiferromagnetic exchange constant
    Bindilatti, V
    Oliveira, NF
    Shapira, Y
    McCabe, GH
    Liu, MT
    Isber, S
    Charar, S
    Averous, M
    McNiff, EJ
    Golacki, Z
    [J]. PHYSICAL REVIEW B, 1996, 53 (09): : 5472 - 5480
  • [7] NEIGHBORHOOD NOTION IN THE MAGNETIC-PROPERTIES STUDY OF MAGNETIC-MATERIALS WITH A DOMINANT SUPEREXCHANGE INTERACTION
    BRUNO, A
    LASCARAY, JP
    [J]. PHYSICAL REVIEW B, 1988, 38 (13): : 9168 - 9171
  • [8] MAGNETIZATION STEPS IN DILUTE MAGNETIC SEMICONDUCTORS TO 55-T - MN2+ PAIR SATURATION IN CD1-XMNXTE AND STEPS IN ZN1-XMNXSE,ZN1-XMNXTE, AND CD1-XMNXSE
    FONER, S
    SHAPIRA, Y
    HEIMAN, D
    BECLA, P
    KERSHAW, R
    DWIGHT, K
    WOLD, A
    [J]. PHYSICAL REVIEW B, 1989, 39 (16): : 11793 - 11799
  • [9] MAGNETIZATION STEPS OF NEAREST-NEIGHBOR EXCHANGE INTERACTIONS IN CDS(CO) AND CDSE(CO) IN FIELDS TO 60 TESLA
    FONER, S
    HEIMAN, D
    VU, TQ
    FRIES, T
    MCCABE, GH
    SHAPIRA, Y
    DEMIANIUK, M
    [J]. SOLID STATE COMMUNICATIONS, 1995, 95 (07) : 455 - 459
  • [10] FROSSATI G, 1993, Patent No. 5189880