TY - JOUR
T1 - High-temperature magnetic properties of SmCo6.7-xCu0.6Tix magnets
AU - Al-Omari, I. A.
AU - Shobaki, J.
AU - Skomski, R.
AU - Leslie-Pelecky, D.
AU - Zhou, J.
AU - Sellmyer, D. J.
N1 - Funding Information:
This work was supported by ARO/DARPA and CMRA at the University of Nebraska.
PY - 2002/8
Y1 - 2002/8
N2 - Magnetic properties of SmCo6.7-xCu0.6Tix Magnets (x = 0.25 and 0.30) are studied as a function of milling time and temperature. The samples were prepared by two methods: first by arc-melting and milling, and second by mechanical alloying from powders and subsequent annealing. The X-ray diffraction analyses show that the samples consist of 1:5 and 2:17 phases. Magnetic measurements show that the coercivity for samples prepared by arc-melting and milling increases with increase in milling time and it reaches a maximum of 8.1 kOe for x = 0.30 and 5.3 kOe for x = 0.25, and then decreases for both samples. The coercivities for the sample with x = 0.30 are higher than the coercivities for the sample with x = 0.25 for all milling times. High-temperature vibrating sample magnetometer magnetic measurements show that the coercivity for all samples decreases with increasing temperature from room temperature to 600°C. The sample prepared by mechanical alloying has higher coercivity (20 kOe at room temperature) than that prepared by arc-melting and milling for all temperatures under investigation. These materials have moderate energy products (1-10 MG Oe) and can be used for high-temperature magnetic applications.
AB - Magnetic properties of SmCo6.7-xCu0.6Tix Magnets (x = 0.25 and 0.30) are studied as a function of milling time and temperature. The samples were prepared by two methods: first by arc-melting and milling, and second by mechanical alloying from powders and subsequent annealing. The X-ray diffraction analyses show that the samples consist of 1:5 and 2:17 phases. Magnetic measurements show that the coercivity for samples prepared by arc-melting and milling increases with increase in milling time and it reaches a maximum of 8.1 kOe for x = 0.30 and 5.3 kOe for x = 0.25, and then decreases for both samples. The coercivities for the sample with x = 0.30 are higher than the coercivities for the sample with x = 0.25 for all milling times. High-temperature vibrating sample magnetometer magnetic measurements show that the coercivity for all samples decreases with increasing temperature from room temperature to 600°C. The sample prepared by mechanical alloying has higher coercivity (20 kOe at room temperature) than that prepared by arc-melting and milling for all temperatures under investigation. These materials have moderate energy products (1-10 MG Oe) and can be used for high-temperature magnetic applications.
KW - Anisotropy
KW - Coercivity
KW - Fine-temperature magnetism
KW - Milling
KW - Permanent magnets
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U2 - 10.1016/S0921-4526(02)00832-3
DO - 10.1016/S0921-4526(02)00832-3
M3 - Conference article
AN - SCOPUS:0036684945
SN - 0921-4526
VL - 321
SP - 107
EP - 111
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 1-4
T2 - Proceedings of the Second Regional Conference on Magnetic and (MSS-01)
Y2 - 9 September 2001 through 13 September 2001
ER -