P-31 NUCLEAR-MAGNETIC-RESONANCE KNIGHT-SHIFT AND LINEWIDTH IN NI3P AND CU3P - A MAGIC-ANGLE SPINNING STUDY

被引：23

作者：

FURO, I ^{[1
]}

BAKONYI, I ^{[1
]}

TOMPA, K ^{[1
]}

ZSOLDOS, E ^{[1
]}

HEINMAA, I ^{[1
]}

ALLA, M ^{[1
]}

LIPPMAA, E ^{[1
]}

机构：

[1] TALLINN CHEM PHYS & BIOPHYS INST,TALLINN 200001,ESTONIA,USSR

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 18期

关键词：

D O I：

10.1088/0953-8984/2/18/018

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Accurate measurements of small 31P Knight shift effects in crystalline Ni3P and Cu3P alloys have been performed by using a magic-angle spinning (MAS) nuclear magnetic resonance (NMR) technique. Both the average Knight shift and the width of its distribution have been found to be different when comparing a normal (equilibrium) and a melt-quenched Ni3P alloy and this is attributed to possible differences in defect concentration and grain size. The 31P NMR line shift of Cu 3P is much smaller (K=0.012%) than that of Ni3P (K=0.179%) but spin-lattice relaxation time measurements indicated a Korringa-type relaxation mechanism for both alloys, i.e. Cu3P has also a metallic character.

引用

页码：4217 / 4225

页数：9

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