Perovskite Ba0.5Sr0.5TiO3 thin films have been synthesized on (001) LaAlO3 substrates by pulsed laser ablation. Extensive x-ray diffraction, rocking curve, and pole-figure studies suggest that the films are c-axis oriented and exhibit good in-plane relationship of 〈100〉BSTO//〈100〉LAO. Rutherford backscattering spectrometry studies indicate that the epitaxial films have excellent crystalline quality with an ion beam minimum yield χmin of only 2.6%. The dielectric property measurements by the interdigital technique at 1 MHz show room-temperature values of the relative dielectric constant, εr, and loss tangent, tan δ, of 1430 and 0.007 with no bias, and 960 and 0.001 with 35 V bias, respectively. The obtained data suggest that the as-grown Ba0.5Sr0.5TiO3 films can be used for development of room-temperature tunable microwave elements.

Breast cancer survivors report persistent psychological and physical symptoms, which affect their quality of life and may challenge the recovery process. Due to social, cultural, and linguistic barriers, culturally-sensitive care is largely unavailable for Chinese Americans, and their psychological needs are not often addressed. We aimed to investigate whether the Joy Luck Academy (JLA), a psychosocial intervention providing both information and peer support, was associated with positive adjustment among Chinese American breast cancer survivors. Thirty-nine Chinese American breast cancer survivors participated in a pilot psychosocial intervention. The educational materials and lectures were delivered in the participants' native language of Chinese. All of the educators and mentors shared the same linguistic and cultural background with the participants. The program utilized a community-based participatory research (CBPR) approach to further enhance the cultural sensitivity of the intervention. Participants' post-traumatic growth and positive affect were assessed before and after the intervention. The JLA showed an improvement in positive affect, and they had a greater appreciation for life. The intervention was found to be feasible, well-accepted, and beneficial for this population. Chinese American breast cancer survivors reported improved psychological health after attending the intervention. These findings encourage the development and implementation of psychosocial interventions for Chinese breast cancer survivors. Similar programs could be integrated into other ethnic or cultural communities.

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