Propiedades magnéticas del sistema de aleaciones CuAl$_{1 - x}$Cr$_{x}$S$_{2}$ (x = 0.50, 0.75)
DOI:
https://doi.org/10.31349/RevMexFis.59.6.521Keywords:
Dilute magnetic semiconductors, X-ray powder diffraction, magnetic susceptibility, electron paramagnetic resonanceAbstract
The synthesis, structural characterization and magnetic properties of alloy system CuAl$_{1 - x}$Cr$_{x}$S$_{2}$ (x = 0.50, 0.75) are reported. The samples were synthesized by using the direct fusion technique. The chemical analysis (EDX) confirmed the stoichiometric ratio for the concentrations. The powder diffraction patterns were indexed and the principal phases crystallizes with tetragonal symmetry with unit cell parameters\linebreak $a$ = 5.312(1) {\AA}, $c$ = 10.389(2) {\AA} for x = 0.50 and $a$ = 5.314(2) {\AA}, $c$ = 10.393(2) {\AA} for x = 0.75. Theses alloys behave as antiferromagnetic, with Néel temperatures of 37 K and 39 K, respectively. The EPR linewidth for these alloys shows a paramagnetic behavior between 100 and 610 K.The resonance field and the g factor show a slight variation with temperature. These results are discussed in terms of nearest-neighbor Cr$^{ + 3}$ (S=3/2) spin-coupled pairs.Downloads
References
S.A. Wolf, A.Y. Chtchelkanova y D.M. Treger,IBM J. Res. &Dev.50(2006) 101 DOI: https://doi.org/10.1147/rd.501.0101
G.A. Medvekin, T. Ishibashi, T. Nishi y K. Hiyata, Jpn. J. Appl. Phys. 39 (2000) L 949 DOI: https://doi.org/10.1143/JJAP.39.7060
S. Choiet al., Solid State Commun. 122 (2002) 165 DOI: https://doi.org/10.1016/S0038-1098(02)00094-7
S. Choet al., Phys. Rev. Lett. 88 (2002) 257203 DOI: https://doi.org/10.1103/PhysRevLett.88.257203
S. Y. Sarkisov y S. Picozzi, J. Phys: Condens. Mater 19 (2007) 016210 DOI: https://doi.org/10.1088/0953-8984/19/1/016210
T. Kamatani y H. Akai,Mater. Sci. Semicond. Process 6 (2003) 389 DOI: https://doi.org/10.1016/j.mssp.2003.08.005
G. Brandt, A. Rauber y J. Schneider, Solid State Communications12(1973) 481-483 DOI: https://doi.org/10.1016/0038-1098(73)90638-8
P. F. Bongerset al., J. Phys. Chem. Solids. 29 (1967) 977-984 DOI: https://doi.org/10.1016/0022-3697(68)90234-5
E. Quintero et al., Journal of Alloys and Compounds 471 (2009) 16 DOI: https://doi.org/10.1016/j.jallcom.2008.03.087
G. C. Tewari, T. S. Tripathi y A. K. Rastogi,Journal of Electronic Materials 39 (2010) 1133-1139 DOI: https://doi.org/10.1007/s11664-010-1185-5
D. L. Huber, Phys. Rev. B 6 (1972) 3180 DOI: https://doi.org/10.1103/PhysRevB.6.3180
S. B. Oseroff, Phys. Rev. B 25 (1982) 6584 DOI: https://doi.org/10.1103/PhysRevB.25.6584
J. Mantilla, Tesis Doctoral (Universidad de Sao Paulo 2004)
S. B. Oseroff, R. Calvo y W. Giriat, Solid State Comm. 37 (1980) 539 DOI: https://doi.org/10.1016/0038-1098(80)90892-3
S. F. Chehab y J. C. Woolley, J. Less-Common Metals. 106 (1985) 13 DOI: https://doi.org/10.1016/0022-5088(85)90360-1
S. F. Chehab J. C. Woolley, A. Manoogian y G. Lamarche, J. Magn. Magn. Mater. 62 (1986) 312 DOI: https://doi.org/10.1016/0304-8853(86)90160-5
J. C. Woolley, S. F. Chehab, T. Donofrio, S. Manhas, A. Ma-noogian y G. Lamarche, J. Magn. Magn. Mater. 66 (1987) 23 DOI: https://doi.org/10.1016/0304-8853(87)90123-5
D. J. Webb, S. M. Bhagat y J. K. Furdyna, J. Appl. Phys. 55 (1984) 2310 DOI: https://doi.org/10.1063/1.333644
H. A. Sayad y S. M. Bhagat, Phys. Rev.B 31 (1985) 591 DOI: https://doi.org/10.1103/PhysRevD.31.2652
P. Silva, J. Fermin, M. Chourio, L. Betancourt y V. Sagredo, Cryst. Res. Tech. 1-2 (1996) 559
A. Solano y M. E. Sosa, Revista de la Sociedad Quımica deMexico 44 (2000) 168-175
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2019 Revista Mexicana de Física
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors retain copyright and grant the Revista Mexicana de Física right of first publication with the work simultaneously licensed under a CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
