Magnetostriction and anisotropy of twin-free single-crystals Tb{sub 0.5}Dy{sub 0.5}(Fe{sub 0.9}Mn{sub 0.1}){sub 2}

Journal Article · Mon Apr 01 00:00:00 EST 1996 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.361698· OSTI ID:280007

Wang, J; Wu, G; Zhao, X; Jia, K; Zhan, W ^[1]

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1. State Key Laboratory for Magnetism, Institute of Physics, CAS, P.O. Box 603, Beijing 100080, Peoples Republic of (China)

A study of the effects of substituting a small amount of Mn for Fe in the Terfenol-D system is presented. The twin-free and {l_angle}111{r_angle}-oriented single-crystal rods of Tb{sub 0.5}Dy{sub 0.5}(Fe{sub 0.9}Mn{sub 0.1}){sub 2} were prepared by Czochralski method. The magnetization, lattice constant, Curie temperature, and magnetostriction were examined. From the experimental results, it is possible to determine the effect of Mn substitution on magnetic anisotropy and magnetostriction. Because of Mn substituting for Fe, magnetic moment values of Tb{sub 0.5}Dy{sub 0.5}(Fe{sub 0.9}Mn{sub 0.1}){sub 2} show two inflections and the easy magnetization directions also show changes from 1.5 to 300 K at an applied field of 1000 Oe. It strongly suggests that Mn substitution remarkably influences magnetocrystalline anisotropy of Tb{sub 0.5}Dy{sub 0.5}(Fe{sub 0.9}Mn{sub 0.1}){sub 2}. Its saturation magnetostrictions are 1.48{times}10{sup {minus}3} and 1.67{times}10{sup {minus}3}, maximum {ital d}{sub 33} values are 1 and 1.5 under compressive stress of 0 and 12 MPa, respectively. These magnetostrictive properties are clearly better than those measured from the {l_angle}112{r_angle}-oriented twinned samples. This is the first time that the experimental data measured from the single-crystalline samples on the magnetic properties of Tb{sub 0.5}Dy{sub 0.5}(Fe{sub 0.9}Mn{sub 0.1}){sub 2} are reported. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 280007
• Report Number(s): CONF-951101-; ISSN 0021-8979; TRN: 9608M0058
• Journal Information: Journal of Applied Physics, Vol. 79, Issue 8; Conference: 40. conference on magnetism and magnetic materials, Philadelphia, PA (United States), 6-9 Nov 1995; Other Information: PBD: Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TERBIUM COMPOUNDS
MAGNETIZATION
DYSPROSIUM COMPOUNDS
IRON COMPOUNDS
MANGANESE COMPOUNDS
TWINNING
MONOCRYSTALS
MAGNETIC MATERIALS
LATTICE PARAMETERS
CURIE POINT
HIGH PRESSURE
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
SUBSTITUTION
MAGNETIC ANISOTROPY