PERTURBED-ANGULAR-CORRELATION MEASUREMENTS AT TA-181 IN HF2PD AND ZR2PD TETRAGONAL MOSI2-TYPE PHASES

被引：14
|
作者：
WODNIECKA, B [1 ]
MARSZALEK, M [1 ]
WODNIECKI, P [1 ]
SAITOVITCH, H [1 ]
DASILVA, PRJ [1 ]
HRYNKIEWICZ, AZ [1 ]
机构：
[1] CTR BRASILEIRO PESQUISAS FIS,RIO JANEIRO,BRAZIL
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1995年 / 219卷
关键词：
INTERMETALLIC COMPOUNDS; PERTURBED ANGULAR CORRELATIONS; ELECTRIC FIELD GRADIENT;
D O I：
10.1016/0925-8388(94)05067-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The electric quadrupole interaction at Ta-181 in Hf2Pd and Zr2Pd compounds was studied by the perturbed angular correlation method in a broad temperature range. The powder X-ray analysis verified a single-phase C11(b) structure of the samples. The least-squares fits of the perturbation factor to the experimental spectra measured for Hf2Pd and Zr2Pd compounds yielded an electric interaction with a well-defined single quadrupole frequency (nu(Q)=305(2) MHz for Hf2Pd and 291(4) MHz for Zr2Pd) and asymmetry parameter eta=0, reflecting the existence of one axially symmetric probe site. A decrease in the quadrupole interaction frequency with an increase of temperature is very rapid for both Hf2Pd and Zr2Pd compounds.
引用
收藏
页码：132 / 134
页数：3
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