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Published on: August 15, 2015
Ferroelectric Sr3 Sn2 O7 :Nd3+ : A New Multipiezo Material with Ultrasensitive and Sustainable Near-Infrared
Dong Tu1,2, Chao-Nan Xu1,3, Sunao Kamimura4
1National Institute of Advanced Industrial Science and Technology (AIST), Saga, 841-0052, Japan.
Abstract:
Ultrasensitive and sustainable near-infrared (NIR)-emitting piezoluminescence is observed from noncentrosymmetric and ferroelectric-phase Sr3 Sn2 O7 doped with rare earth Nd3+ ions. Sr3 Sn2 O7 :Nd3+ (SSN) with polar A21 am structure is demonstrated to emit piezoluminescence of wavelength of 800-1500 nm at microstrain levels, which is enhanced by the ferroelectrically polarized charges in the multipiezo material. These discoveries provide new research opportunities to study luminescence properties of multipiezo and piezo-photonic materials, and to explore their potential as novel ultrasensitive probes for deep-imaging of stress distributions in diverse materials and structures including artificial bone and other implanted structures (in vivo, in situ, etc).

