We present the discovery of six millisecond pulsars ( MSPs ) in the High Time Resolution Universe ( HTRU ) survey for pulsars and fast transients carried out with the Parkes radio telescope .
All six are in binary systems with approximately circular orbits and are likely to have white dwarf companions .
PSR J1017–7156 has a high flux density and a narrow pulse width , making it ideal for precision timing experiments .
PSRs J1446–4701 and J1125–5825 are coincident with gamma-ray sources , and folding the high-energy photons with the radio timing ephemeris shows evidence of pulsed gamma-ray emission .
PSR J1502–6752 has a spin period of 26.7 ms , and its low period derivative implies that it is a recycled pulsar .
The orbital parameters indicate it has a very low mass function , and therefore a companion mass much lower than usually expected for such a mildly recycled pulsar .

In addition we present polarisation profiles for all 12 MSPs discovered in the HTRU survey to date .
Similar to previous observations of MSPs , we find that many have large widths and a wide range of linear and circular polarisation fractions .
Their polarisation profiles can be highly complex , and although the observed position angles often do not obey the rotating vector model , we present several examples of those that do .
We speculate that the emission heights of MSPs are a substantial fraction of the light cylinder radius in order to explain broad emission profiles , which then naturally leads to a large number of cases where emission from both poles is observed .