Is there any ferroelectric oxides with Tc in the range of 2K- 10K?

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Tapan Chatterji

It is true that ferroelectric transition temperature Tc is often very high and higher than room temperature. However I found two oxide ferroelectric materials which have Tc in the range 2-10K desired by you:

1. K3Li2Ta5O15 with Tc = 7 K

2. LiTlO4H4O6.H2O Tc = 10 K

Now please tell me why do you need low Tc ferroelectric materials? Is there any useful application?

Lunyong Zhang

Thanks very much!