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. 2014 Nov 12;4:7019. doi: 10.1038/srep07019

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(a) Pyroelectric current as a function of temperature measured for various heating rates. The circles denote the data measured along c axis. (b) Integrated polarization as a function of temperature under various magnetic fields. (c) Ferroelectric hysteresis loop measured using the PUND method at T = 5 K and 40 K.