Behavior of one-magnon frequency in antiferromagnetic NicMg1-cO solid solutions -: art. no. 134415

被引：31

作者：

Cazzanelli, E ^{[1
]}

Kuzmin, A

Mironova-Ulmane, N

Mariotto, G

机构：

[1] Univ Calabria, INFM, I-87036 Cosenza, Italy

[2] Univ Calabria, Dipartimento Fis, I-87036 Cosenza, Italy

[3] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia

[4] Univ Trent, Dipartimento Fis, I-38050 Trento, Italy

[5] Univ Trent, INFM, I-38050 Trento, Italy

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.71.134415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The one-magnon scattering was studied in antiferromagnetic NicMg1-cO solid solutions. We observed unpredicted behavior of both temperature and composition dependences of one-magnon excitation energies. First, the abrupt change of the one-magnon frequency by 7-8 cm(-1) occurs between c=0.98 and c=0.9 in the limit of T -> 0 K. Second, upon increasing temperature, the one-magnon energy for highly diluted nickel oxide vanishes significantly below the Neel temperature.

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页数：5

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