R L Fleischer, P B Price and R M Walker J. Appl. Phys. 36 3645 (1965)
J P Singh, R Singh, D Kanjilal, N C Mishra and V Ganesan J. Appl. Phys. 87 2742 (2000)
J Wang, J B Neaton, H Zheng, V Nagarajan, S B Ogale, B Liu, D Viehland, V Vaithyanathan, D G Schlom, U V Waghmare, N A Spaldin, K M Rabe, M Wuttig and R Ramesh Science 299 1719 (2003)
V R Palkar, J John and R Pinto Appl. Phys. Lett. 80 1628 (2002)
J Li, J Wang, M Wuttig, R Ramesh, N Wang, B Ruette, A P Pyatakov, A K Zvezdin and D Viehland Appl. Phys. Lett. 84 5261 (2004)
A G Tutov Fiz Tverd Tela (FTVTA) 11 2681 (1969)
G D Achenbach, R Gerson and W J James J. Am. Ceram. Soc. 50 437 (1967)
S W Lee and C S Kim J. Magn. 10 84 (2005)
M Azuma, H Kanda, A A Belik, Y Shimakawa and M Takano J. Mag. Mag. Mat. 310 1177 (2007)
D Kothari, V R Reddy, A Gupta, D M Phase, N Lakshmi, S K Deshpande and A M Awasthi, J Phys.: Condens. Matter 19 136202 (2007)
V R Palkar, Darshan C Kundaliya and S K Malik J. Appl. Phys. 93 4337 (2003)
D H Wang, W C Goh, M Ning and C K Ong Appl. Phys. Lett. 88 212907 (2006)
Manoj Kumar and K L Yadav J. Appl. Phys. 100 074111 (2006)
P Dash, B N Dash, H Rath, C Rath and N C Mishra Indian J. Phys. 83 485 (2009)
H Liu, Z Liu, Q Liu and K Yao Thin Solid Films 500 105 (2006)
M K Singh, H M Jang, S Ryu and M-Ho Jo Appl. Phys. Lett. 88 042907 (2006)
