Magnetic Ordering in NdS

Abstract

By 1. V. G o~o s o v s~~~ and V. P. PLAKHTY B neutron diffraction study has been made of powdered NdS samples a t 4.2, 27, arid 293 "K. A noncollinoar magnetic structure with two propagation vectors has been revealed. All spins lying in a { 110) plane are collinear and arranged antiferromagnetically. From plane to plane the spin direction rotates by a right angle. The possible and really observed spin configurations are discussed within the, framework of the molecular field method. M~T O~O M HeiiTpoHiIoii ~i~@ @ p a~4 1 1 1 1 HR nopomKe mcnexoDaIIo coeameHxxe NdS IIpH 'IeMIIeJIRTypaX 4,2, 2 7 , 293 OK. O6HapymeHa H~h ' O J I J I € l I I~U~~I I~H MarHLlTHaR CT]>yIrTypa C n B y M R BeKTOpaMEl ~IacII~IOCTpaHeHElFI. BCe CII€IIIbI, JIeFI<aI4He B IIJIOC-IIOCTRK { 1 lo} I<OnJIIIHeRpHbI 12 yIIOpHnOrIeIIbI a H T 1 I @ e~~~) o M a l . I 1 1~T I I L I M 06pa30M. OT IIIJTOCKOCTII H IIJIOCKOCTLI Hanpaenemie CIIIIHOB noBopawBaeTcH ~r a 90". Bo3-MowIIbIe II peanmo HaGmonaeMaH C I I I I I I O U L I~ I-FoH@irypau1m o6cym:IaIoTcn 13 paMKRX TeOpklkI MoJIeHyJIHpHOrO IIOJlR.