MAGNETIC-ORDERING OF PR IN PB2SR2PRCU3O8

被引：16

作者：

HSIEH, WT

LI, WH

LEE, KC

LYNN, JW

SHIEH, JH

KU, HC

机构：

[1] NIST,DIV REACTOR RADIAT,GAITHERSBURG,MD 20899

[2] NATL TSING HUA UNIV,DEPT PHYS,HSINCHU 300,TAIWAN

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 76卷 / 10期

关键词：

D O I：

10.1063/1.358051

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic ordering of the Pr ions in Pb2Sr 2PrCu3O8 has been studied using neutron-diffraction and ac-suspectibility measurements. An imperfect three-dimensional magnetic ordering of the Pr spins was observed at a temperature well below its Neel temperature of TN≊7 K. The magnetic intensities observed at T=1.4 K can be explained by assuming long-range order in the ab plane with short-range correlations, of correlation length ξc=20 Å, along the c axis and a moment directed along the c-axis direction. The magnetic ordering is 2D in nature, and the basic magnetic structure consists of nearest-neighbor spins that are aligned antiparallel along all three crystallographic directions. The magnetic transition is also evident in the ac-susceptibility versus temperature measurements, where a cusp that is typical of antiferromagnetic ordering is clearly observed, which matches the TN obtained by neutron diffraction.

引用

页码：7124 / 7126

页数：3