Abstract
The pinning of grain interfaces plays an important role in determining the coercivity of nanocomposite magnets. Here, based on pinning effect, a simple model was proposed to correlate the pinning strength with microstructural parameters. A structural factor K has been used to describe the contribution of the phase composition and grain size of hard and soft phases to pinning strength. The model can be used to estimate the pinning strength of nanocomposite magnets, which is important for the design and fabrication of nanocomposite magnets with high coercivity.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Herzer, G.: IEEE Trans. Magn. 26, 1397 (1990)
Manaf, A., Buckley, R.A., Davies, H.A., Leonowicz, M.: J. Magn. Magn. Mater. 101, 360 (1991)
Yin, M., Hu, J., Liu, Y., Wang, Z.X., Lin, W.G.: Chin. Phys. Lett. 7, 330 (1990)
Billoni, O.V., Urreta, S.E., Fabietti, L.M., Bertorello, H.R.: J. Magn. Magn. Mater. 187, 371 (1998)
Sun, X.K., Zhang, J., Chu, Y.L.: Appl. Phys. Lett. 74, 1740 (1999)
Zhao, G.P., Wang, X.L., Yang, C., Xie, L.H., Zhou, G.: J. Appl. Phys. 101, 09K102 (2007)
Feng, W.C., Gao, R.W., Yan, S.S., Li, W., Zhu, M.G.: J. Appl. Phys. 98, 044305 (2005)
Li, Z.B., Shen, B.G., Niu, E., Sun, J.R.: Appl. Phys. Lett. 103, 062405 (2013)
Fischer, R., Schrefl, T., Kronmüller, H., Fidler, J.: J. Magn. Magn. Mater. 153, 35 (1996)
Skomski, R., Coey, J.M.D.: Phys. Rev. B 48, 15812 (1993)
Li, X.H., Lou, L., Song, W.P., Zhang, Q., Huang, G.W., Hua, Y.X., Zhang, H.T., Xiao, J.W., Wen, B., Zhang, X.Y.: Nano Lett. 17, 2985 (2017)
Li, X.H., Lou, L., Song, W.P., Huang, G.W., Hou, F.C., Zhang, Q., Zhang, H.T., Xiao, J.W., Wen, B., Zhang, X.Y.: Adv. Mater. 29, 1606430 (2017)
Huang, G.W., Li, X.H., Lou, L., Hua, Y.X., Zhu, G.J., Li, M., Zhang, H.T., Xiao, J.W., Wen, B., Yue, M., Zhang, X.Y.: Small 14, 1800619 (2018)
Friedberg, R., Paul, D.I.: Phys. Rev. Lett. 34, 1234 (1975)
Zhang, X.Y., Zhang, F.X., Zhang, J.W., Yu, W., Zhang, M., Zhao, J.H., Liu, R.P., Xu, Y.F., Wang, W.K.: J. Appl. Phys. 84, 1918 (1998)
Liu, Y.G., Xu, L., Wang, Q.F., Li, W., Zhang, X.Y.: Appl. Phys. Lett. 94, 172502 (2009)
Bauer, J., Seeger, M., Zern, A., Kronmüller, H.: J. Appl. Phys. 80, 1667 (1996)
Zhao, G.P., Wang, X.L.: Phys. Rev. B 74, 012409 (2006)
Zhao, G.P., Zhao, M.G., Lim, H.S., Feng, Y.P., Ong, C.K.: Appl. Phys. Lett. 87, 162513 (2005)
Si, W.J., Zhao, G.P., Ran, N., Peng, Y., Morvan, F.J., Wan, X.L.: Sci. Rep. 5, 16212 (2015)
Coehoorn, R., Mooji, D.B., DeWaard, C.: J. Magn. Magn. Mater. 80, 101 (1989)
Kneller, E.F., Hawig, R.: IEEE Trans. Magn. 27, 3588 (1991)
Li, W., Li, L.L., Nan, Y., Li, X.H., Zhang, X.Y., Gunderov, D.V., Stolyarov, V.V., Popov, A.G.: Appl. Phys. Lett. 91, 062509 (2007)
Li, H.L., Lou, L., Hou, F.C., Guo, D.F., Li, W., Li, X.H., Gunderov, D.V., Sato, K., Zhang, X.Y.: Appl. Phys. Lett. 103, 142406 (2013)
Sepehri-Amin, H., Ohkubo, T., Hono, K.: Acta Mater. 61, 1982 (2013)
Balamurugan, B., Sellmyer, D.J., Hadjipanayisc, G.C., Skomski R.: Scr. Mater. 67, 542 (2012)
Zhang, X.Y., Guan, Y., Zhang, J.W.: Appl. Phys. Lett. 80, 1966 (2002)
Zhang, X.Y., Sprengel, W., Staab, T.E.M., Inui, H., Schaefer, H.-E.: Phys. Rev. Lett. 92, 155502 (2004)
Acknowledgments
We thank Mrs. H.L. Li and B. Li for their assistance in the preparation of samples and helpful discussions.
Funding
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 51471144, 51471145, 51771163, and 51421091) and the Science and Technology Research Project of Hebei Province (No. ZD2016076).
Author information
Authors and Affiliations
Corresponding authors
Rights and permissions
About this article
Cite this article
Zhang, G., Shan, W. & Guo, D. Phase and Grain Size Dependence of the Pinning Strength of Nanocomposite Magnets. J Supercond Nov Magn 32, 1599–1603 (2019). https://doi.org/10.1007/s10948-018-4873-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10948-018-4873-7