The phrase "a secondary objective of" is correct and usable in written English.
You can use it when discussing goals or aims that are not the primary focus but still hold significance in a particular context.
Example: "While the main goal of the project is to increase sales, a secondary objective of our efforts is to enhance customer satisfaction."
Alternatives: "a secondary aim of" or "a supplementary goal of".
A secondary objective of this campaign was to establish political bases of the new regime in the countryside, which had remained almost entirely outside its control.
They also seem to have forgotten that there is a secondary objective of ensuring growth and employment.
The primary objective is to minimize the number of stations with a secondary objective of minimizing total setup cost.
A secondary objective of the study was to examine relationships between attentional biases for food cues and personality and eating-style traits, which have been previously associated with dysfunction of the reward system and/or obesity.
Therefore, a secondary objective of this study is to assess how to effectively and accurately deal with this aspect in routine design calculations.
A secondary objective of this study was to determine the effect of using a polyetheretherketone (PEEK) versus a cobalt chrome (CoCr) implant on vertebral body strains.
His photostated proposal for an Arts Lab in Beckenham attempts to embrace the spirit of the times, but ends up sounding a bit creepy: "A secondary objective of this proposal is that through communication with local children we should be able to communicate ideas to the parents".
How odd, then, that it appears as if a secondary objective of the survey is to prepare the ground for the Co-op Group – made up of the bank, the stores and other businesses such as pharmacies and farms – to abandon the historic link with the Co-operative party, the embodiment of the commitment to a different way of organising the economy.
The fund seeks current income and current gains, with a secondary objective of long-term capital appreciation, says Lehmann.
Investigating household's willingness-to-pay for improved water supply services constitutes a secondary objective of the study.
A secondary objective of this study was to assess how fuel treatments and wildfire impacted long-term carbon resources in treated and untreated stands at our study site.
