Zobrazeno 1 - 10
of 260
pro vyhledávání: '"K.V.S. Rama Rao"'
Publikováno v:
Journal of Alloys and Compounds. 364:295-303
The elemental additions to Nd-Fe-B for the simultaneous enhancement of the Curie temperature (TC), intrinsic coercivity (Hci), remanence (Br) appear to be the viable option for improving the temperature stability of the magnetic properties. In this w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::608f99d2176091e94aa96a0f573ed586
https://doi.org/10.1016/s0925-8388(03)00541-3
https://doi.org/10.1016/s0925-8388(03)00541-3
Publikováno v:
Journal of Alloys and Compounds. 352:6-15
(Sm1-xPrx)3Fe27.5Ti1.5 [x = 0.2, 0.5, 0.8, 1.0] compounds belonging to the novel 3:29 class have been prepared in order to investigate the effects of the combination of rare earths having opposite signs of second-order Stevens coefficient on their st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad74e3e5a835425a22ca5bb894912e34
https://doi.org/10.1016/s0925-8388(02)01090-3
https://doi.org/10.1016/s0925-8388(02)01090-3
Publikováno v:
Journal of Applied Physics. 92:6082-6086
This study describes the relative effect on the permanent magnet characteristics viz. remanence (B r), intrinsic coercivity (H ci), Curie temperature (T C), rectangularity of the intrinsic demagnetization curve, when Al, Cu, Ga, Nb are added individu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42263571d6e537a2180467d905e1aac6
https://doi.org/10.1063/1.1513879
https://doi.org/10.1063/1.1513879
Publikováno v:
IEEE Transactions on Magnetics. 37:2489-2492
Alloys of nominal composition Nd/sub 16.8/Fe/sub 75.7-x/Al/sub x/B/sub 7.5/, with x=0.25, 0.5, 0.75, 1,5, 3 and 6 were selected and powder metallurgically processed into sintered magnets. Significant improvement in intrinsic coercivity (H/sub ci/) an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c130e35693382568bf086e2f15cd9f84
https://doi.org/10.1109/20.951212
https://doi.org/10.1109/20.951212
Publikováno v:
Journal of Materials Science. 36:5903-5907
Sintered samples of (Nd14.9 Dy1.9) (Fe65 Co8 Cu1.0 Ga1.0 Nb0.7)B7.5 were prepared and subjected to stepwise annealing in the temperature range 875 K–675 K. The XRD and metallographic (optical and electron microscopy) studies reveal a multi-phase mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f3827516e920ad4707bf8e41ee112fe
https://doi.org/10.1023/a:1012932827861
https://doi.org/10.1023/a:1012932827861
Publikováno v:
Physica B: Condensed Matter. 292:35-46
The phases RR′Fe17−xGaxCy [ ( RR ′)=( Tm , Pr ) , (Nd, Sm), (Sm, Pr); x=0–7; y=0 and x=0, 1, 2 ; y=1] were synthesized by arc melting technique. The substitution of larger Ga atoms for smaller Fe leads to an expansion of the lattice. Substitu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2af3e5991d33253dc253f0e865db740
https://doi.org/10.1016/s0921-4526(00)00497-x
https://doi.org/10.1016/s0921-4526(00)00497-x
Publikováno v:
Physica B: Condensed Matter. 291:159-172
A detailed investigation of the structure and magnetic properties of R2Fe17−xGax (R=Tm, Er and Sm and x=0–7) was carried out by means of powder X-ray diffraction, magnetization and AC magnetic susceptibility measurements. With increasing Ga conte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7ad8b1a7184d44f515c163fae8a77d9
https://doi.org/10.1016/s0921-4526(99)01305-8
https://doi.org/10.1016/s0921-4526(99)01305-8
Publikováno v:
International Journal of Hydrogen Energy. 25:463-472
The kinetics of hydrogen absorption in the PuNi 3 type rhombohedral Tb 1− x Zr x Fe 3 ( x =0.1, 0.2, 0.3) system are studied in the temperature range 75≤ T (°C)≤150 at an initial pressure of 20 bar. By fitting the experimental kinetic data to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24cfc28b29301d414e03ade4ea9401e4
https://doi.org/10.1016/s0360-3199(99)00050-6
https://doi.org/10.1016/s0360-3199(99)00050-6
Publikováno v:
Solid State Communications. 108:313-318
The results of low temperature magnetization measurements carried out on the Dy 0.73 Tb 0.27 Fe 2− x Co x system and their hydrogenated compounds are presented. Low temperature (12 K) magnetization data reveals a large increase in anisotropy in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc3395575c94efcf33cac77766eeb111
https://doi.org/10.1016/s0038-1098(98)00355-x
https://doi.org/10.1016/s0038-1098(98)00355-x
Publikováno v:
Solid State Communications. 106:379-383
The variations of Curie temperature (TC) of RE2Fe17 compounds upon substitutional and interstitial modifications are qualitatively explained using a simple phenomenological equation T C = Cμ eff 2 f( λ d ) . Here μeff is the effective magnetic mom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2682d4bb9a267636e52110ff36a68df9
https://doi.org/10.1016/s0038-1098(98)00049-0
https://doi.org/10.1016/s0038-1098(98)00049-0