Zr site determination and origin of magnetic anisotropy in HDDR processed Nd<sub>2</sub>Fe<sub>14</sub>B-based magnets

The local structure changes around Ga and Nb in Nd12.5FebalGa0.3Nb0.2B6.2 during homogenization, disproportionation, and recombination processes are studied by fluorescence XAFS in order to understand the roles of Ga and Nb on the improvement of (BH)max. Comparing the observed XAFS of the Ga K edge with the calculated ones, Ga is proved to occupy preferentially the Fe(4c) site in Nd2Fe14B structure after homogenization and recombination, while it dissolves in α-Fe after the disproportionation. On the other hand, XAFS results of the Nb K edge does not change in the whole hydrogenation, disproportionation, desorption, and recombination process; the XAFS results of Nb indicate the formation of a stable NbFeB phase in the homogenized state.

show abstract

Site occupancy of Ga and Nb in Nd12.5FebalGa0.3Nb0.2B6.2 during the hydrogenation, disproportionation, desorption, and recombination process

Konno

Matsuura

Ikuta

et al. 2002

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

Study of structural and magnetic properties of melt spun Nd₂Fe13.6Zr0.4B ingot and ribbon

et al. 2015

View full text Add to dashboard Cite

Nd2Fe[Formula: see text]Zr[Formula: see text]B hard magnetic material were prepared using arc-melting technique on a water-cooled copper hearth kept under argon gas atmosphere. The prepared samples, Nd2Fe[Formula: see text]Zr[Formula: see text]B ingot and ribbon are characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) for crystal structure determination and morphological studies, respectively. The magnetic properties of the samples have been explored using vibrating sample magnetometer (VSM). The lattice constants slightly increased due to the difference in the ionic radii of Fe and that of Zr. The bulk density decreased due to smaller molar weight and low density of Zr as compared to that of Fe. Ingot sample shows almost single crystalline phase with larger crystallite sizes whereas ribbon sample shows a mixture of amorphous and crystalline phases with smaller crystallite sizes. The crystallinity of the material was highly affected with high thermal treatments. Magnetic measurements show noticeable variation in magnetic behavior with the change in crystallite size. The sample prepared in ingot type shows soft while ribbon shows hard magnetic behavior.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Zr site determination and origin of magnetic anisotropy in HDDR processed Nd₂Fe₁₄B-based magnets

Cited by 2 publications

References 9 publications

Site occupancy of Ga and Nb in Nd12.5FebalGa0.3Nb0.2B6.2 during the hydrogenation, disproportionation, desorption, and recombination process

Site occupancy of Ga and Nb in Nd12.5FebalGa0.3Nb0.2B6.2 during the hydrogenation, disproportionation, desorption, and recombination process

Study of structural and magnetic properties of melt spun Nd₂Fe13.6Zr0.4B ingot and ribbon

Contact Info

Product

Resources

About

Zr site determination and origin of magnetic anisotropy in HDDR processed Nd2Fe14B-based magnets

Cited by 2 publications

References 9 publications

Site occupancy of Ga and Nb in Nd12.5FebalGa0.3Nb0.2B6.2 during the hydrogenation, disproportionation, desorption, and recombination process

Site occupancy of Ga and Nb in Nd12.5FebalGa0.3Nb0.2B6.2 during the hydrogenation, disproportionation, desorption, and recombination process

Study of structural and magnetic properties of melt spun Nd2Fe13.6Zr0.4B ingot and ribbon

Contact Info

Product

Resources

About

Zr site determination and origin of magnetic anisotropy in HDDR processed Nd₂Fe₁₄B-based magnets

Study of structural and magnetic properties of melt spun Nd₂Fe13.6Zr0.4B ingot and ribbon