[1] Landy N I, Sajuyigbe S, Mock J J, Smith D R, Padilla W J[J]. Phys. Rev. Lett., 100, 207402(2008).

[2] Ding F, Cui Y X, Ge X C, Jin Y, He S L[J]. Appl. Phys. Lett., 100, 103506(2012).

[3] Zhang Y, Huang Y, Zhang T F, Chang H C, Xiao P S, Chen H H, Huang Z Y, Chen Y S[J]. Adv. Mater., 27, 2049(2015).

[4] Wang Y, Du Y C, Xu P, Qiang R, Han X J[J]. Polymers, 9, 29(2017).

[5] Liu Y P, Zhang B Z, Duan J P, Xu Y G[J]. Appl. Opt., 57, 10257(2018).

[6] Zhang X J, Wang G S, Cao W Q, Wei Y Z, Liang J F, Guo L, Cao M S[J]. ACS Appl. Mater. Interfaces, 6, 7471(2014).

[7] Zhang Y, Huang Y, Chen H H, Huang Z Y, Yang Y, Xiao P S, Zhou Y, Chen Y S[J]. Carbon, 105, 438(2016).

[8] Wang D J, Zhang J Y, He P, Hou Z L[J]. Ceram. Int., 45, 23043(2019).

[9] Zhou Z H, Liu X L, Huang D Q, Kang F Y[J]. Acta Phys. Sin., 63, 184101(2014).

[10] Zhang K L, Zhang J Y, Hou Z L, Bi S, Zhao Q L[J]. Carbon, 141, 608(2019).

[11] Wang J, Gao C N, Jiang Y N, Charles N A[J]. Chin. Phys. B, 26, 114102(2017).

[12] Wang Y, Du Y C, Qiang R, Tian C H, Xu P, Han X J[J]. Adv. Mater. Interfaces, 3, 1500684(2016).

[13] Alkuh M S, Famili M H N, Shirvan M M M, Moeini M H[J]. Mater. Des., 100, 73(2016).

[14] Amano M, Kotsuka Y[J]. IEEE Trans. Microwave Theory Tech., 51, 238(2003).

[15] Kazantsev Y N, Lopatin A V, Kazantseva N E, Shatrov A D, Mal'tsev V P, Vilcakova J, Saha P[J]. IEEE Trans. Antennas Propag., 58, 1227(2010).

[16] Chen H Y, Zhang H B, Deng L J[J]. IEEE Antennas Wirel. Propag. Lett., 9, 899(2010).

[17] Rozanov K N, Li Z W, Chen L F, Koledintseva M Y[J]. J. Appl. Phys., 97, 013905(2005).

[18] Park M J, Choi J H, Kim S S 2000 Intermag Proceedings of International Magnetics Conference Toronto, Canada, April 0912, 2000 p3272

[19] Jacobo S E, Fano W G, Razzitte A C, Digiovanni N D, Trainotti V 1998 Proceedings of the 67th Annual Conference on Electrical Insulation and Dielectric Phenomena Atlanta, USA, October 2528, 1998 p273

[20] Bi K, Guo Y S, Liu X M, Zhao Q, Xiao J H, Lei M, Zhou J[J]. Sci. Rep., 4, 7001(2014).

[21] Yang Y J, Huang Y J, Wen G J, Zhong J P, Sun H B, Oghenemuero G[J]. Chin. Phys. B, 21, 038501(2012).

[22] Guo F, Du H L, Qu S B, Xia S, Xu Z, Zhao J F, Zhang H M[J]. Acta Phys. Sin., 64, 077801(2015).

[23] Meena R S, Bhattachrya S, Chatterjee R[J]. J. Magn. Magn. Mater., 322, 1923(2010).

[24] Liu X S, Hernandez-Gomez P, Huang K, Zhou S Q, Wang Y, Cai X, Sun H J, Ma B[J]. J. Magn. Magn. Mater., 305, 524(2006).

[25] Bercoff P G, Herme C, Jacobo S E[J]. J. Magn. Magn. Mater., 321, 2245(2009).

[26] Zuo X, How H, Somu S, Vittoria C[J]. IEEE Trans. Magn., 39, 3160(2003).

[27] Pozar D M 2004 Microwave Engineering (3rd ed) (New York: Wiely) pp391395

[28] Yang Y, Yang Y, Wen X, Ding J[J]. J. Appl. Phys., 115, 17A521(2014).

[29] Zhang K L, Hou Z L, Bi S, Fang H M[J]. Chin. Phys. B, 26, 127802(2017).