Abstract
Magnetic hyperfine fields (MHF) acting on sup(181)Ta at the Nb and V sites have been determined in the Heusler alloys Co sub(2) NbA1 and Co sub(2) VA1 by the time differential perturbed angular correlation (TDPAC) technique utilizing the well known 133-482 Kev gamma cascade in sup(181)Ta. The measurement were carried out using an automatic spectrometer consisting of three NaI(T1) detectors and a fast-slow coincidence system. The measurements were performed at 77 K with and without an externally applied magnetic field ( {approx} 4.5 KGauss) to determine the sign as well as the magnitude of the hyperfine fields in both alloys. For the alloy Co sub(2) NbA1 a unique field of -138(4) KOe was observed whereas in the case of Co sub(2)VA1 two distinct magnetic sites were observed. The present result show that approximately 24% of the sup(181)Ta atoms in this alloy probe a field of -116(4) KOe while the other {approx} 76% of the atoms feel -83(3) KOe. Present data along with the existing results on similar alloys Co sub(2)T1,Hf,Zr (Al,Ga,Sn) are discussed and compared with the magnetic hyperfine field systematics in Heusler alloys. (author).
Citation Formats
Pendl, Junior, W.
Magnetic hyperfine fields on {sup 181}Ta at the Nb and V sites in Heusler alloys Co{sub 2}YAL (Y=NB,V); Estudo do campo hiperfino magnetico no {sup 181}Ta nos sitios de NB e V nas ligas de Heusler CO{sub 2}YAL (Y=NB,V).
Brazil: N. p.,
1990.
Web.
Pendl, Junior, W.
Magnetic hyperfine fields on {sup 181}Ta at the Nb and V sites in Heusler alloys Co{sub 2}YAL (Y=NB,V); Estudo do campo hiperfino magnetico no {sup 181}Ta nos sitios de NB e V nas ligas de Heusler CO{sub 2}YAL (Y=NB,V).
Brazil.
Pendl, Junior, W.
1990.
"Magnetic hyperfine fields on {sup 181}Ta at the Nb and V sites in Heusler alloys Co{sub 2}YAL (Y=NB,V); Estudo do campo hiperfino magnetico no {sup 181}Ta nos sitios de NB e V nas ligas de Heusler CO{sub 2}YAL (Y=NB,V)."
Brazil.
@misc{etde_10102750,
title = {Magnetic hyperfine fields on {sup 181}Ta at the Nb and V sites in Heusler alloys Co{sub 2}YAL (Y=NB,V); Estudo do campo hiperfino magnetico no {sup 181}Ta nos sitios de NB e V nas ligas de Heusler CO{sub 2}YAL (Y=NB,V)}
author = {Pendl, Junior, W}
abstractNote = {Magnetic hyperfine fields (MHF) acting on sup(181)Ta at the Nb and V sites have been determined in the Heusler alloys Co sub(2) NbA1 and Co sub(2) VA1 by the time differential perturbed angular correlation (TDPAC) technique utilizing the well known 133-482 Kev gamma cascade in sup(181)Ta. The measurement were carried out using an automatic spectrometer consisting of three NaI(T1) detectors and a fast-slow coincidence system. The measurements were performed at 77 K with and without an externally applied magnetic field ( {approx} 4.5 KGauss) to determine the sign as well as the magnitude of the hyperfine fields in both alloys. For the alloy Co sub(2) NbA1 a unique field of -138(4) KOe was observed whereas in the case of Co sub(2)VA1 two distinct magnetic sites were observed. The present result show that approximately 24% of the sup(181)Ta atoms in this alloy probe a field of -116(4) KOe while the other {approx} 76% of the atoms feel -83(3) KOe. Present data along with the existing results on similar alloys Co sub(2)T1,Hf,Zr (Al,Ga,Sn) are discussed and compared with the magnetic hyperfine field systematics in Heusler alloys. (author).}
place = {Brazil}
year = {1990}
month = {Dec}
}
title = {Magnetic hyperfine fields on {sup 181}Ta at the Nb and V sites in Heusler alloys Co{sub 2}YAL (Y=NB,V); Estudo do campo hiperfino magnetico no {sup 181}Ta nos sitios de NB e V nas ligas de Heusler CO{sub 2}YAL (Y=NB,V)}
author = {Pendl, Junior, W}
abstractNote = {Magnetic hyperfine fields (MHF) acting on sup(181)Ta at the Nb and V sites have been determined in the Heusler alloys Co sub(2) NbA1 and Co sub(2) VA1 by the time differential perturbed angular correlation (TDPAC) technique utilizing the well known 133-482 Kev gamma cascade in sup(181)Ta. The measurement were carried out using an automatic spectrometer consisting of three NaI(T1) detectors and a fast-slow coincidence system. The measurements were performed at 77 K with and without an externally applied magnetic field ( {approx} 4.5 KGauss) to determine the sign as well as the magnitude of the hyperfine fields in both alloys. For the alloy Co sub(2) NbA1 a unique field of -138(4) KOe was observed whereas in the case of Co sub(2)VA1 two distinct magnetic sites were observed. The present result show that approximately 24% of the sup(181)Ta atoms in this alloy probe a field of -116(4) KOe while the other {approx} 76% of the atoms feel -83(3) KOe. Present data along with the existing results on similar alloys Co sub(2)T1,Hf,Zr (Al,Ga,Sn) are discussed and compared with the magnetic hyperfine field systematics in Heusler alloys. (author).}
place = {Brazil}
year = {1990}
month = {Dec}
}